Finding the Fourth Proportional to 112,831.59, 155,666.37 and 67,510.86

Step by Step Solution

1. Step 1: Write the proportion equation
   112,831.59 : 155,666.37 = 67,510.86 : x
2. Step 2: Convert to fraction form
   112,831.59/155,666.37 = 67,510.86/x
3. Step 3: Cross multiply
   112,831.59x = 155,666.37 × 67,510.86
4. Step 4: Simplify right side
   112,831.59x = 10,509,170,511.78
5. Step 5: Solve for x
   x = 10,509,170,511.78/112,831.59
6. Step 6: Final answer
   x = 93,140.32