Finding the Fourth Proportional to 156,089.49, 215,404.04 and 84,469.49

Step by Step Solution

1. Step 1: Write the proportion equation
   156,089.49 : 215,404.04 = 84,469.49 : x
2. Step 2: Convert to fraction form
   156,089.49/215,404.04 = 84,469.49/x
3. Step 3: Cross multiply
   156,089.49x = 215,404.04 × 84,469.49
4. Step 4: Simplify right side
   156,089.49x = 18,195,069,941.25
5. Step 5: Solve for x
   x = 18,195,069,941.25/156,089.49
6. Step 6: Final answer
   x = 116,568.19