Finding the Fourth Proportional to 284,152.32, 392,128.27 and 156,827.91

Step by Step Solution

1. Step 1: Write the proportion equation
   284,152.32 : 392,128.27 = 156,827.91 : x
2. Step 2: Convert to fraction form
   284,152.32/392,128.27 = 156,827.91/x
3. Step 3: Cross multiply
   284,152.32x = 392,128.27 × 156,827.91
4. Step 4: Simplify right side
   284,152.32x = 61,496,657,036.02
5. Step 5: Solve for x
   x = 61,496,657,036.02/284,152.32
6. Step 6: Final answer
   x = 216,421.45