Finding the Fourth Proportional to 131,856.28, 181,962.54 and 71,426.93

Step by Step Solution

1. Step 1: Write the proportion equation
   131,856.28 : 181,962.54 = 71,426.93 : x
2. Step 2: Convert to fraction form
   131,856.28/181,962.54 = 71,426.93/x
3. Step 3: Cross multiply
   131,856.28x = 181,962.54 × 71,426.93
4. Step 4: Simplify right side
   131,856.28x = 12,997,024,518.82
5. Step 5: Solve for x
   x = 12,997,024,518.82/131,856.28
6. Step 6: Final answer
   x = 98,569.63