Finding the Fourth Proportional to 133,200.30, 199,630.35 and 54,225.30

Step by Step Solution

1. Step 1: Write the proportion equation
   133,200.30 : 199,630.35 = 54,225.30 : x
2. Step 2: Convert to fraction form
   133,200.30/199,630.35 = 54,225.30/x
3. Step 3: Cross multiply
   133,200.30x = 199,630.35 × 54,225.30
4. Step 4: Simplify right side
   133,200.30x = 10,825,015,617.86
5. Step 5: Solve for x
   x = 10,825,015,617.86/133,200.30
6. Step 6: Final answer
   x = 81,268.70