Finding the Fourth Proportional to 109,345.55, 150,925.01 and 71,200.31

Step by Step Solution

1. Step 1: Write the proportion equation
   109,345.55 : 150,925.01 = 71,200.31 : x
2. Step 2: Convert to fraction form
   109,345.55/150,925.01 = 71,200.31/x
3. Step 3: Cross multiply
   109,345.55x = 150,925.01 × 71,200.31
4. Step 4: Simplify right side
   109,345.55x = 10,745,906,388.13
5. Step 5: Solve for x
   x = 10,745,906,388.13/109,345.55
6. Step 6: Final answer
   x = 98,274.75