Finding the Fourth Proportional to 88,380.50, 121,965.11 and 48,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,380.50 : 121,965.11 = 48,636.50 : x
2. Step 2: Convert to fraction form
   88,380.50/121,965.11 = 48,636.50/x
3. Step 3: Cross multiply
   88,380.50x = 121,965.11 × 48,636.50
4. Step 4: Simplify right side
   88,380.50x = 5,931,956,072.52
5. Step 5: Solve for x
   x = 5,931,956,072.52/88,380.50
6. Step 6: Final answer
   x = 67,118.38