Finding the Fourth Proportional to 78,657, 108,552.60 and 48,434.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,657 : 108,552.60 = 48,434.82 : x
2. Step 2: Convert to fraction form
   78,657/108,552.60 = 48,434.82/x
3. Step 3: Cross multiply
   78,657x = 108,552.60 × 48,434.82
4. Step 4: Simplify right side
   78,657x = 5,257,725,641.53
5. Step 5: Solve for x
   x = 5,257,725,641.53/78,657
6. Step 6: Final answer
   x = 66,843.71