Finding the Fourth Proportional to 123,418,876.77, 170,335,400.85 and 76,391,034.48

Step by Step Solution

1. Step 1: Write the proportion equation
   123,418,876.77 : 170,335,400.85 = 76,391,034.48 : x
2. Step 2: Convert to fraction form
   123,418,876.77/170,335,400.85 = 76,391,034.48/x
3. Step 3: Cross multiply
   123,418,876.77x = 170,335,400.85 × 76,391,034.48
4. Step 4: Simplify right side
   123,418,876.77x = 13,012,097,479,496,972
5. Step 5: Solve for x
   x = 13,012,097,479,496,972/123,418,876.77
6. Step 6: Final answer
   x = 105,430,367.06