Finding the Fourth Proportional to 99,417.93, 137,247.57 and 76,705.89

Step by Step Solution

1. Step 1: Write the proportion equation
   99,417.93 : 137,247.57 = 76,705.89 : x
2. Step 2: Convert to fraction form
   99,417.93/137,247.57 = 76,705.89/x
3. Step 3: Cross multiply
   99,417.93x = 137,247.57 × 76,705.89
4. Step 4: Simplify right side
   99,417.93x = 10,527,697,007.19
5. Step 5: Solve for x
   x = 10,527,697,007.19/99,417.93
6. Step 6: Final answer
   x = 105,893.34