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Finding the Fourth Proportional to 112,345.52, 154,965.65 and 85,429.04

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Solution

The fourth proportional to 112,345.52, 154,965.65 and 85,429.04 is: 117,837.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,345.52 : 154,965.65 = 85,429.04 : x
  2. Step 2: Convert to fraction form
    112,345.52/154,965.65 = 85,429.04/x
  3. Step 3: Cross multiply
    112,345.52x = 154,965.65 × 85,429.04
  4. Step 4: Simplify right side
    112,345.52x = 13,238,565,510.50
  5. Step 5: Solve for x
    x = 13,238,565,510.50/112,345.52
  6. Step 6: Final answer
    x = 117,837.95

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