Finding the Fourth Proportional to 139,546.31, 192,628.69 and 98,922.77

Step by Step Solution

1. Step 1: Write the proportion equation
   139,546.31 : 192,628.69 = 98,922.77 : x
2. Step 2: Convert to fraction form
   139,546.31/192,628.69 = 98,922.77/x
3. Step 3: Cross multiply
   139,546.31x = 192,628.69 × 98,922.77
4. Step 4: Simplify right side
   139,546.31x = 19,055,363,101.66
5. Step 5: Solve for x
   x = 19,055,363,101.66/139,546.31
6. Step 6: Final answer
   x = 136,552.25