Finding the Fourth Proportional to 156,434.76, 215,877.96 and 84,814.56

Step by Step Solution

1. Step 1: Write the proportion equation
   156,434.76 : 215,877.96 = 84,814.56 : x
2. Step 2: Convert to fraction form
   156,434.76/215,877.96 = 84,814.56/x
3. Step 3: Cross multiply
   156,434.76x = 215,877.96 × 84,814.56
4. Step 4: Simplify right side
   156,434.76x = 18,309,594,191.10
5. Step 5: Solve for x
   x = 18,309,594,191.10/156,434.76
6. Step 6: Final answer
   x = 117,043.00