Finding the Fourth Proportional to 99,150.24, 136,880.67 and 76,439.46

Step by Step Solution

1. Step 1: Write the proportion equation
   99,150.24 : 136,880.67 = 76,439.46 : x
2. Step 2: Convert to fraction form
   99,150.24/136,880.67 = 76,439.46/x
3. Step 3: Cross multiply
   99,150.24x = 136,880.67 × 76,439.46
4. Step 4: Simplify right side
   99,150.24x = 10,463,084,499.24
5. Step 5: Solve for x
   x = 10,463,084,499.24/99,150.24
6. Step 6: Final answer
   x = 105,527.58