Finding the Fourth Proportional to 156,090.32, 215,404.63 and 84,470.34

Step by Step Solution

1. Step 1: Write the proportion equation
   156,090.32 : 215,404.63 = 84,470.34 : x
2. Step 2: Convert to fraction form
   156,090.32/215,404.63 = 84,470.34/x
3. Step 3: Cross multiply
   156,090.32x = 215,404.63 × 84,470.34
4. Step 4: Simplify right side
   156,090.32x = 18,195,302,333.67
5. Step 5: Solve for x
   x = 18,195,302,333.67/156,090.32
6. Step 6: Final answer
   x = 116,569.06