Finding the Fourth Proportional to 133,061.40, 199,630.35 and 76,941.72

Step by Step Solution

1. Step 1: Write the proportion equation
   133,061.40 : 199,630.35 = 76,941.72 : x
2. Step 2: Convert to fraction form
   133,061.40/199,630.35 = 76,941.72/x
3. Step 3: Cross multiply
   133,061.40x = 199,630.35 × 76,941.72
4. Step 4: Simplify right side
   133,061.40x = 15,359,902,493.20
5. Step 5: Solve for x
   x = 15,359,902,493.20/133,061.40
6. Step 6: Final answer
   x = 115,434.70