Finding the Fourth Proportional to 108,499.25, 149,731.37 and 61,931.17

Step by Step Solution

1. Step 1: Write the proportion equation
   108,499.25 : 149,731.37 = 61,931.17 : x
2. Step 2: Convert to fraction form
   108,499.25/149,731.37 = 61,931.17/x
3. Step 3: Cross multiply
   108,499.25x = 149,731.37 × 61,931.17
4. Step 4: Simplify right side
   108,499.25x = 9,273,039,304.13
5. Step 5: Solve for x
   x = 9,273,039,304.13/108,499.25
6. Step 6: Final answer
   x = 85,466.39