Finding the Fourth Proportional to 112,323,787.50, 155,022,225.18 and 64,638,061.86

Step by Step Solution

1. Step 1: Write the proportion equation
   112,323,787.50 : 155,022,225.18 = 64,638,061.86 : x
2. Step 2: Convert to fraction form
   112,323,787.50/155,022,225.18 = 64,638,061.86/x
3. Step 3: Cross multiply
   112,323,787.50x = 155,022,225.18 × 64,638,061.86
4. Step 4: Simplify right side
   112,323,787.50x = 10,020,336,180,859,690
5. Step 5: Solve for x
   x = 10,020,336,180,859,690/112,323,787.50
6. Step 6: Final answer
   x = 89,209,386.58