Finding the Fourth Proportional to 62,061.62, 85,428.74 and 54,090

Step by Step Solution

1. Step 1: Write the proportion equation
   62,061.62 : 85,428.74 = 54,090 : x
2. Step 2: Convert to fraction form
   62,061.62/85,428.74 = 54,090/x
3. Step 3: Cross multiply
   62,061.62x = 85,428.74 × 54,090
4. Step 4: Simplify right side
   62,061.62x = 4,620,840,276.15
5. Step 5: Solve for x
   x = 4,620,840,276.15/62,061.62
6. Step 6: Final answer
   x = 74,455.69