Finding the Fourth Proportional to 99,615.42, 137,458.22 and 59,323.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99,615.42 : 137,458.22 = 59,323.59 : x
2. Step 2: Convert to fraction form
   99,615.42/137,458.22 = 59,323.59/x
3. Step 3: Cross multiply
   99,615.42x = 137,458.22 × 59,323.59
4. Step 4: Simplify right side
   99,615.42x = 8,154,514,788.79
5. Step 5: Solve for x
   x = 8,154,514,788.79/99,615.42
6. Step 6: Final answer
   x = 81,859.96