Finding the Fourth Proportional to 111,200.92, 153,472.18 and 65,875.40

Step by Step Solution

1. Step 1: Write the proportion equation
   111,200.92 : 153,472.18 = 65,875.40 : x
2. Step 2: Convert to fraction form
   111,200.92/153,472.18 = 65,875.40/x
3. Step 3: Cross multiply
   111,200.92x = 153,472.18 × 65,875.40
4. Step 4: Simplify right side
   111,200.92x = 10,110,041,246.37
5. Step 5: Solve for x
   x = 10,110,041,246.37/111,200.92
6. Step 6: Final answer
   x = 90,916.88