Finding the Fourth Proportional to 112,571,484.49, 155,350,234.86 and 64,860,370.21

Step by Step Solution

1. Step 1: Write the proportion equation
   112,571,484.49 : 155,350,234.86 = 64,860,370.21 : x
2. Step 2: Convert to fraction form
   112,571,484.49/155,350,234.86 = 64,860,370.21/x
3. Step 3: Cross multiply
   112,571,484.49x = 155,350,234.86 × 64,860,370.21
4. Step 4: Simplify right side
   112,571,484.49x = 10,076,073,745,158,308
5. Step 5: Solve for x
   x = 10,076,073,745,158,308/112,571,484.49
6. Step 6: Final answer
   x = 89,508,224.85