Finding the Fourth Proportional to 139,210.89, 192,111.15 and 75,548.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,210.89 : 192,111.15 = 75,548.70 : x
2. Step 2: Convert to fraction form
   139,210.89/192,111.15 = 75,548.70/x
3. Step 3: Cross multiply
   139,210.89x = 192,111.15 × 75,548.70
4. Step 4: Simplify right side
   139,210.89x = 14,513,747,638.01
5. Step 5: Solve for x
   x = 14,513,747,638.01/139,210.89
6. Step 6: Final answer
   x = 104,257.27