Finding the Fourth Proportional to 156,064.89, 215,367.98 and 84,443.34

Step by Step Solution

1. Step 1: Write the proportion equation
   156,064.89 : 215,367.98 = 84,443.34 : x
2. Step 2: Convert to fraction form
   156,064.89/215,367.98 = 84,443.34/x
3. Step 3: Cross multiply
   156,064.89x = 215,367.98 × 84,443.34
4. Step 4: Simplify right side
   156,064.89x = 18,186,391,138.04
5. Step 5: Solve for x
   x = 18,186,391,138.04/156,064.89
6. Step 6: Final answer
   x = 116,530.96