Finding the Fourth Proportional to 260,142.72, 390,266.82 and 147,876.72

Step by Step Solution

1. Step 1: Write the proportion equation
   260,142.72 : 390,266.82 = 147,876.72 : x
2. Step 2: Convert to fraction form
   260,142.72/390,266.82 = 147,876.72/x
3. Step 3: Cross multiply
   260,142.72x = 390,266.82 × 147,876.72
4. Step 4: Simplify right side
   260,142.72x = 57,711,377,266.43
5. Step 5: Solve for x
   x = 57,711,377,266.43/260,142.72
6. Step 6: Final answer
   x = 221,845.06