Finding the Fourth Proportional to 99,449.76, 137,291.51 and 76,737.77

Step by Step Solution

1. Step 1: Write the proportion equation
   99,449.76 : 137,291.51 = 76,737.77 : x
2. Step 2: Convert to fraction form
   99,449.76/137,291.51 = 76,737.77/x
3. Step 3: Cross multiply
   99,449.76x = 137,291.51 × 76,737.77
4. Step 4: Simplify right side
   99,449.76x = 10,535,443,822.72
5. Step 5: Solve for x
   x = 10,535,443,822.72/99,449.76
6. Step 6: Final answer
   x = 105,937.35