Finding the Fourth Proportional to 156,089.69, 215,404.30 and 84,469.69

Step by Step Solution

1. Step 1: Write the proportion equation
   156,089.69 : 215,404.30 = 84,469.69 : x
2. Step 2: Convert to fraction form
   156,089.69/215,404.30 = 84,469.69/x
3. Step 3: Cross multiply
   156,089.69x = 215,404.30 × 84,469.69
4. Step 4: Simplify right side
   156,089.69x = 18,195,134,445.67
5. Step 5: Solve for x
   x = 18,195,134,445.67/156,089.69
6. Step 6: Final answer
   x = 116,568.46