Finding the Fourth Proportional to 272,003.22, 375,256.89 and 157,260.78

Step by Step Solution

1. Step 1: Write the proportion equation
   272,003.22 : 375,256.89 = 157,260.78 : x
2. Step 2: Convert to fraction form
   272,003.22/375,256.89 = 157,260.78/x
3. Step 3: Cross multiply
   272,003.22x = 375,256.89 × 157,260.78
4. Step 4: Simplify right side
   272,003.22x = 59,013,191,221.77
5. Step 5: Solve for x
   x = 59,013,191,221.77/272,003.22
6. Step 6: Final answer
   x = 216,957.69