Finding the Fourth Proportional to 91,906,948.70, 137,718,705.45 and 79,719,235.10

Step by Step Solution

1. Step 1: Write the proportion equation
   91,906,948.70 : 137,718,705.45 = 79,719,235.10 : x
2. Step 2: Convert to fraction form
   91,906,948.70/137,718,705.45 = 79,719,235.10/x
3. Step 3: Cross multiply
   91,906,948.70x = 137,718,705.45 × 79,719,235.10
4. Step 4: Simplify right side
   91,906,948.70x = 10,978,829,857,436,200
5. Step 5: Solve for x
   x = 10,978,829,857,436,200/91,906,948.70
6. Step 6: Final answer
   x = 119,455,928.12