Finding the Fourth Proportional to 59,161, 81,642.18 and 40,331.08

Step by Step Solution

1. Step 1: Write the proportion equation
   59,161 : 81,642.18 = 40,331.08 : x
2. Step 2: Convert to fraction form
   59,161/81,642.18 = 40,331.08/x
3. Step 3: Cross multiply
   59,161x = 81,642.18 × 40,331.08
4. Step 4: Simplify right side
   59,161x = 3,292,717,292.95
5. Step 5: Solve for x
   x = 3,292,717,292.95/59,161
6. Step 6: Final answer
   x = 55,656.89