Finding the Fourth Proportional to 156,086.10, 215,398.81 and 84,466.12

Step by Step Solution

1. Step 1: Write the proportion equation
   156,086.10 : 215,398.81 = 84,466.12 : x
2. Step 2: Convert to fraction form
   156,086.10/215,398.81 = 84,466.12/x
3. Step 3: Cross multiply
   156,086.10x = 215,398.81 × 84,466.12
4. Step 4: Simplify right side
   156,086.10x = 18,193,900,656.32
5. Step 5: Solve for x
   x = 18,193,900,656.32/156,086.10
6. Step 6: Final answer
   x = 116,563.24