Finding the Fourth Proportional to 156,026.72, 215,316 and 84,406.52

Step by Step Solution

1. Step 1: Write the proportion equation
   156,026.72 : 215,316 = 84,406.52 : x
2. Step 2: Convert to fraction form
   156,026.72/215,316 = 84,406.52/x
3. Step 3: Cross multiply
   156,026.72x = 215,316 × 84,406.52
4. Step 4: Simplify right side
   156,026.72x = 18,174,074,260.32
5. Step 5: Solve for x
   x = 18,174,074,260.32/156,026.72
6. Step 6: Final answer
   x = 116,480.53