Finding the Fourth Proportional to 133,061.30, 199,323.15 and 82,987.70

Step by Step Solution

1. Step 1: Write the proportion equation
   133,061.30 : 199,323.15 = 82,987.70 : x
2. Step 2: Convert to fraction form
   133,061.30/199,323.15 = 82,987.70/x
3. Step 3: Cross multiply
   133,061.30x = 199,323.15 × 82,987.70
4. Step 4: Simplify right side
   133,061.30x = 16,541,369,775.26
5. Step 5: Solve for x
   x = 16,541,369,775.26/133,061.30
6. Step 6: Final answer
   x = 124,313.90