Finding the Fourth Proportional to 156,118.64, 215,443.33 and 84,498.71

Step by Step Solution

1. Step 1: Write the proportion equation
   156,118.64 : 215,443.33 = 84,498.71 : x
2. Step 2: Convert to fraction form
   156,118.64/215,443.33 = 84,498.71/x
3. Step 3: Cross multiply
   156,118.64x = 215,443.33 × 84,498.71
4. Step 4: Simplify right side
   156,118.64x = 18,204,682,174.64
5. Step 5: Solve for x
   x = 18,204,682,174.64/156,118.64
6. Step 6: Final answer
   x = 116,608.00