Finding the Fourth Proportional to 139,411.61, 192,389.20 and 75,749.41

Step by Step Solution

1. Step 1: Write the proportion equation
   139,411.61 : 192,389.20 = 75,749.41 : x
2. Step 2: Convert to fraction form
   139,411.61/192,389.20 = 75,749.41/x
3. Step 3: Cross multiply
   139,411.61x = 192,389.20 × 75,749.41
4. Step 4: Simplify right side
   139,411.61x = 14,573,368,654.53
5. Step 5: Solve for x
   x = 14,573,368,654.53/139,411.61
6. Step 6: Final answer
   x = 104,534.82