Finding the Fourth Proportional to 139,968,008.55, 209,952,012.83 and 88,697,730.15

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,008.55 : 209,952,012.83 = 88,697,730.15 : x
2. Step 2: Convert to fraction form
   139,968,008.55/209,952,012.83 = 88,697,730.15/x
3. Step 3: Cross multiply
   139,968,008.55x = 209,952,012.83 × 88,697,730.15
4. Step 4: Simplify right side
   139,968,008.55x = 18,622,266,978,001,188
5. Step 5: Solve for x
   x = 18,622,266,978,001,188/139,968,008.55
6. Step 6: Final answer
   x = 133,046,595.23