Finding the Fourth Proportional to 123,419,493.54, 170,336,251.17 and 76,391,651.34

Step by Step Solution

1. Step 1: Write the proportion equation
   123,419,493.54 : 170,336,251.17 = 76,391,651.34 : x
2. Step 2: Convert to fraction form
   123,419,493.54/170,336,251.17 = 76,391,651.34/x
3. Step 3: Cross multiply
   123,419,493.54x = 170,336,251.17 × 76,391,651.34
4. Step 4: Simplify right side
   123,419,493.54x = 13,012,267,509,941,306
5. Step 5: Solve for x
   x = 13,012,267,509,941,306/123,419,493.54
6. Step 6: Final answer
   x = 105,431,217.85