Finding the Fourth Proportional to 139,085.61, 191,938.24 and 75,423.39

Step by Step Solution

1. Step 1: Write the proportion equation
   139,085.61 : 191,938.24 = 75,423.39 : x
2. Step 2: Convert to fraction form
   139,085.61/191,938.24 = 75,423.39/x
3. Step 3: Cross multiply
   139,085.61x = 191,938.24 × 75,423.39
4. Step 4: Simplify right side
   139,085.61x = 14,476,632,105.94
5. Step 5: Solve for x
   x = 14,476,632,105.94/139,085.61
6. Step 6: Final answer
   x = 104,084.33