Finding the Fourth Proportional to 105,498.75, 145,599.98 and 60,187.91

Step by Step Solution

1. Step 1: Write the proportion equation
   105,498.75 : 145,599.98 = 60,187.91 : x
2. Step 2: Convert to fraction form
   105,498.75/145,599.98 = 60,187.91/x
3. Step 3: Cross multiply
   105,498.75x = 145,599.98 × 60,187.91
4. Step 4: Simplify right side
   105,498.75x = 8,763,358,620.86
5. Step 5: Solve for x
   x = 8,763,358,620.86/105,498.75
6. Step 6: Final answer
   x = 83,065.99