Finding the Fourth Proportional to 112,904.06, 155,807.42 and 65,157.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,904.06 : 155,807.42 = 65,157.40 : x
2. Step 2: Convert to fraction form
   112,904.06/155,807.42 = 65,157.40/x
3. Step 3: Cross multiply
   112,904.06x = 155,807.42 × 65,157.40
4. Step 4: Simplify right side
   112,904.06x = 10,152,006,387.91
5. Step 5: Solve for x
   x = 10,152,006,387.91/112,904.06
6. Step 6: Final answer
   x = 89,917.11