Finding the Fourth Proportional to 284,061.15, 392,012.53 and 156,744.95

Step by Step Solution

1. Step 1: Write the proportion equation
   284,061.15 : 392,012.53 = 156,744.95 : x
2. Step 2: Convert to fraction form
   284,061.15/392,012.53 = 156,744.95/x
3. Step 3: Cross multiply
   284,061.15x = 392,012.53 × 156,744.95
4. Step 4: Simplify right side
   284,061.15x = 61,445,982,062.30
5. Step 5: Solve for x
   x = 61,445,982,062.30/284,061.15
6. Step 6: Final answer
   x = 216,312.52