Finding the Fourth Proportional to 156,086.58, 215,397.72 and 84,465.30

Step by Step Solution

1. Step 1: Write the proportion equation
   156,086.58 : 215,397.72 = 84,465.30 : x
2. Step 2: Convert to fraction form
   156,086.58/215,397.72 = 84,465.30/x
3. Step 3: Cross multiply
   156,086.58x = 215,397.72 × 84,465.30
4. Step 4: Simplify right side
   156,086.58x = 18,193,633,039.12
5. Step 5: Solve for x
   x = 18,193,633,039.12/156,086.58
6. Step 6: Final answer
   x = 116,561.16