Finding the Fourth Proportional to 156,447.72, 215,897.86 and 84,827.72

Step by Step Solution

1. Step 1: Write the proportion equation
   156,447.72 : 215,897.86 = 84,827.72 : x
2. Step 2: Convert to fraction form
   156,447.72/215,897.86 = 84,827.72/x
3. Step 3: Cross multiply
   156,447.72x = 215,897.86 × 84,827.72
4. Step 4: Simplify right side
   156,447.72x = 18,314,123,216.68
5. Step 5: Solve for x
   x = 18,314,123,216.68/156,447.72
6. Step 6: Final answer
   x = 117,062.26