Finding the Fourth Proportional to 88,985, 122,799.28 and 48,698.78

Step by Step Solution

1. Step 1: Write the proportion equation
   88,985 : 122,799.28 = 48,698.78 : x
2. Step 2: Convert to fraction form
   88,985/122,799.28 = 48,698.78/x
3. Step 3: Cross multiply
   88,985x = 122,799.28 × 48,698.78
4. Step 4: Simplify right side
   88,985x = 5,980,175,120.88
5. Step 5: Solve for x
   x = 5,980,175,120.88/88,985
6. Step 6: Final answer
   x = 67,204.31