Finding the Fourth Proportional to 139,978,873.45, 209,968,310.18 and 88,897,551.85

Step by Step Solution

1. Step 1: Write the proportion equation
   139,978,873.45 : 209,968,310.18 = 88,897,551.85 : x
2. Step 2: Convert to fraction form
   139,978,873.45/209,968,310.18 = 88,897,551.85/x
3. Step 3: Cross multiply
   139,978,873.45x = 209,968,310.18 × 88,897,551.85
4. Step 4: Simplify right side
   139,978,873.45x = 18,665,668,741,083,432
5. Step 5: Solve for x
   x = 18,665,668,741,083,432/139,978,873.45
6. Step 6: Final answer
   x = 133,346,327.78