Finding the Fourth Proportional to 139,333.59, 192,280.91 and 75,672.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,333.59 : 192,280.91 = 75,672.45 : x
2. Step 2: Convert to fraction form
   139,333.59/192,280.91 = 75,672.45/x
3. Step 3: Cross multiply
   139,333.59x = 192,280.91 × 75,672.45
4. Step 4: Simplify right side
   139,333.59x = 14,550,367,169.57
5. Step 5: Solve for x
   x = 14,550,367,169.57/139,333.59
6. Step 6: Final answer
   x = 104,428.28