Finding the Fourth Proportional to 99,762.43, 149,450.67 and 83,559.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99,762.43 : 149,450.67 = 83,559.59 : x
2. Step 2: Convert to fraction form
   99,762.43/149,450.67 = 83,559.59/x
3. Step 3: Cross multiply
   99,762.43x = 149,450.67 × 83,559.59
4. Step 4: Simplify right side
   99,762.43x = 12,488,036,710.43
5. Step 5: Solve for x
   x = 12,488,036,710.43/99,762.43
6. Step 6: Final answer
   x = 125,177.75