Finding the Fourth Proportional to 99,740.24, 137,659.34 and 59,456.57

Step by Step Solution

1. Step 1: Write the proportion equation
   99,740.24 : 137,659.34 = 59,456.57 : x
2. Step 2: Convert to fraction form
   99,740.24/137,659.34 = 59,456.57/x
3. Step 3: Cross multiply
   99,740.24x = 137,659.34 × 59,456.57
4. Step 4: Simplify right side
   99,740.24x = 8,184,752,184.86
5. Step 5: Solve for x
   x = 8,184,752,184.86/99,740.24
6. Step 6: Final answer
   x = 82,060.68