Finding the Fourth Proportional to 139,061.25, 191,904.53 and 75,399.03

Step by Step Solution

1. Step 1: Write the proportion equation
   139,061.25 : 191,904.53 = 75,399.03 : x
2. Step 2: Convert to fraction form
   139,061.25/191,904.53 = 75,399.03/x
3. Step 3: Cross multiply
   139,061.25x = 191,904.53 × 75,399.03
4. Step 4: Simplify right side
   139,061.25x = 14,469,415,037.61
5. Step 5: Solve for x
   x = 14,469,415,037.61/139,061.25
6. Step 6: Final answer
   x = 104,050.66