Finding the Fourth Proportional to 139,018.88, 191,846.40 and 75,356.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,018.88 : 191,846.40 = 75,356.16 : x
2. Step 2: Convert to fraction form
   139,018.88/191,846.40 = 75,356.16/x
3. Step 3: Cross multiply
   139,018.88x = 191,846.40 × 75,356.16
4. Step 4: Simplify right side
   139,018.88x = 14,456,808,013.82
5. Step 5: Solve for x
   x = 14,456,808,013.82/139,018.88
6. Step 6: Final answer
   x = 103,991.69