Finding the Fourth Proportional to 139,092.48, 191,945.91 and 75,429.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,092.48 : 191,945.91 = 75,429.54 : x
2. Step 2: Convert to fraction form
   139,092.48/191,945.91 = 75,429.54/x
3. Step 3: Cross multiply
   139,092.48x = 191,945.91 × 75,429.54
4. Step 4: Simplify right side
   139,092.48x = 14,478,391,696.18
5. Step 5: Solve for x
   x = 14,478,391,696.18/139,092.48
6. Step 6: Final answer
   x = 104,091.84