Finding the Fourth Proportional to 202,131.70, 303,003.15 and 157,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   202,131.70 : 303,003.15 = 157,128.10 : x
2. Step 2: Convert to fraction form
   202,131.70/303,003.15 = 157,128.10/x
3. Step 3: Cross multiply
   202,131.70x = 303,003.15 × 157,128.10
4. Step 4: Simplify right side
   202,131.70x = 47,610,309,253.52
5. Step 5: Solve for x
   x = 47,610,309,253.52/202,131.70
6. Step 6: Final answer
   x = 235,541.03