Finding the Fourth Proportional to 93,312,104.10, 139,968,156.15 and 86,509,659.30

Step by Step Solution

1. Step 1: Write the proportion equation
   93,312,104.10 : 139,968,156.15 = 86,509,659.30 : x
2. Step 2: Convert to fraction form
   93,312,104.10/139,968,156.15 = 86,509,659.30/x
3. Step 3: Cross multiply
   93,312,104.10x = 139,968,156.15 × 86,509,659.30
4. Step 4: Simplify right side
   93,312,104.10x = 12,108,597,501,385,700
5. Step 5: Solve for x
   x = 12,108,597,501,385,700/93,312,104.10
6. Step 6: Final answer
   x = 129,764,488.95