Finding the Fourth Proportional to 156,443.30, 215,892.78 and 84,824.42

Step by Step Solution

1. Step 1: Write the proportion equation
   156,443.30 : 215,892.78 = 84,824.42 : x
2. Step 2: Convert to fraction form
   156,443.30/215,892.78 = 84,824.42/x
3. Step 3: Cross multiply
   156,443.30x = 215,892.78 × 84,824.42
4. Step 4: Simplify right side
   156,443.30x = 18,312,979,845.69
5. Step 5: Solve for x
   x = 18,312,979,845.69/156,443.30
6. Step 6: Final answer
   x = 117,058.26