Finding the Fourth Proportional to 139,196.31, 192,091.43 and 75,534.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,196.31 : 192,091.43 = 75,534.12 : x
2. Step 2: Convert to fraction form
   139,196.31/192,091.43 = 75,534.12/x
3. Step 3: Cross multiply
   139,196.31x = 192,091.43 × 75,534.12
4. Step 4: Simplify right side
   139,196.31x = 14,509,456,746.92
5. Step 5: Solve for x
   x = 14,509,456,746.92/139,196.31
6. Step 6: Final answer
   x = 104,237.37