Finding the Fourth Proportional to 56,671.25, 78,166.57 and 49,104.07

Step by Step Solution

1. Step 1: Write the proportion equation
   56,671.25 : 78,166.57 = 49,104.07 : x
2. Step 2: Convert to fraction form
   56,671.25/78,166.57 = 49,104.07/x
3. Step 3: Cross multiply
   56,671.25x = 78,166.57 × 49,104.07
4. Step 4: Simplify right side
   56,671.25x = 3,838,296,938.52
5. Step 5: Solve for x
   x = 3,838,296,938.52/56,671.25
6. Step 6: Final answer
   x = 67,729.18