Finding the Fourth Proportional to 72,498.04, 99,989.58 and 59,900.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,498.04 : 99,989.58 = 59,900.92 : x
2. Step 2: Convert to fraction form
   72,498.04/99,989.58 = 59,900.92/x
3. Step 3: Cross multiply
   72,498.04x = 99,989.58 × 59,900.92
4. Step 4: Simplify right side
   72,498.04x = 5,989,467,832.41
5. Step 5: Solve for x
   x = 5,989,467,832.41/72,498.04
6. Step 6: Final answer
   x = 82,615.58