Finding the Fourth Proportional to 139,053.82, 191,895.60 and 75,391.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,053.82 : 191,895.60 = 75,391.78 : x
2. Step 2: Convert to fraction form
   139,053.82/191,895.60 = 75,391.78/x
3. Step 3: Cross multiply
   139,053.82x = 191,895.60 × 75,391.78
4. Step 4: Simplify right side
   139,053.82x = 14,467,350,858.17
5. Step 5: Solve for x
   x = 14,467,350,858.17/139,053.82
6. Step 6: Final answer
   x = 104,041.38