Finding the Fourth Proportional to 99,734.41, 137,560.98 and 61,443.15

Step by Step Solution

1. Step 1: Write the proportion equation
   99,734.41 : 137,560.98 = 61,443.15 : x
2. Step 2: Convert to fraction form
   99,734.41/137,560.98 = 61,443.15/x
3. Step 3: Cross multiply
   99,734.41x = 137,560.98 × 61,443.15
4. Step 4: Simplify right side
   99,734.41x = 8,452,179,928.29
5. Step 5: Solve for x
   x = 8,452,179,928.29/99,734.41
6. Step 6: Final answer
   x = 84,746.88