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Finding the Fourth Proportional to 278,060.40, 416,935.08 and 91,056.24

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Solution

The fourth proportional to 278,060.40, 416,935.08 and 91,056.24 is: 136,533.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,060.40 : 416,935.08 = 91,056.24 : x
  2. Step 2: Convert to fraction form
    278,060.40/416,935.08 = 91,056.24/x
  3. Step 3: Cross multiply
    278,060.40x = 416,935.08 × 91,056.24
  4. Step 4: Simplify right side
    278,060.40x = 37,964,540,708.90
  5. Step 5: Solve for x
    x = 37,964,540,708.90/278,060.40
  6. Step 6: Final answer
    x = 136,533.43

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