Finding the Fourth Proportional to 137,096,478.18, 189,193,139.88 and 78,360,404.43

Step by Step Solution

1. Step 1: Write the proportion equation
   137,096,478.18 : 189,193,139.88 = 78,360,404.43 : x
2. Step 2: Convert to fraction form
   137,096,478.18/189,193,139.88 = 78,360,404.43/x
3. Step 3: Cross multiply
   137,096,478.18x = 189,193,139.88 × 78,360,404.43
4. Step 4: Simplify right side
   137,096,478.18x = 14,825,250,956,378,362
5. Step 5: Solve for x
   x = 14,825,250,956,378,362/137,096,478.18
6. Step 6: Final answer
   x = 108,137,358.11