Finding the Fourth Proportional to 139,488.85, 192,492.34 and 75,828.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,488.85 : 192,492.34 = 75,828.25 : x
2. Step 2: Convert to fraction form
   139,488.85/192,492.34 = 75,828.25/x
3. Step 3: Cross multiply
   139,488.85x = 192,492.34 × 75,828.25
4. Step 4: Simplify right side
   139,488.85x = 14,596,357,280.61
5. Step 5: Solve for x
   x = 14,596,357,280.61/139,488.85
6. Step 6: Final answer
   x = 104,641.75