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Finding the Fourth Proportional to 78,510.01, 108,340.69 and 42,700.00

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Solution

The fourth proportional to 78,510.01, 108,340.69 and 42,700.00 is: 58,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,510.01 : 108,340.69 = 42,700.00 : x
  2. Step 2: Convert to fraction form
    78,510.01/108,340.69 = 42,700.00/x
  3. Step 3: Cross multiply
    78,510.01x = 108,340.69 × 42,700.00
  4. Step 4: Simplify right side
    78,510.01x = 4,626,146,707.80
  5. Step 5: Solve for x
    x = 4,626,146,707.80/78,510.01
  6. Step 6: Final answer
    x = 58,924.30

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