Finding the Fourth Proportional to 88,640,845.59, 121,437,391.52 and 85,326,095.96

Step by Step Solution

1. Step 1: Write the proportion equation
   88,640,845.59 : 121,437,391.52 = 85,326,095.96 : x
2. Step 2: Convert to fraction form
   88,640,845.59/121,437,391.52 = 85,326,095.96/x
3. Step 3: Cross multiply
   88,640,845.59x = 121,437,391.52 × 85,326,095.96
4. Step 4: Simplify right side
   88,640,845.59x = 10,361,778,520,933,792
5. Step 5: Solve for x
   x = 10,361,778,520,933,792/88,640,845.59
6. Step 6: Final answer
   x = 116,896,205.72