Finding the Fourth Proportional to 91,596.97, 137,415.23 and 28,415.86

Step by Step Solution

1. Step 1: Write the proportion equation
   91,596.97 : 137,415.23 = 28,415.86 : x
2. Step 2: Convert to fraction form
   91,596.97/137,415.23 = 28,415.86/x
3. Step 3: Cross multiply
   91,596.97x = 137,415.23 × 28,415.86
4. Step 4: Simplify right side
   91,596.97x = 3,904,771,795.47
5. Step 5: Solve for x
   x = 3,904,771,795.47/91,596.97
6. Step 6: Final answer
   x = 42,629.92