Finding the Fourth Proportional to 139,718.76, 193,007.94 and 124,606.58

Step by Step Solution

1. Step 1: Write the proportion equation
   139,718.76 : 193,007.94 = 124,606.58 : x
2. Step 2: Convert to fraction form
   139,718.76/193,007.94 = 124,606.58/x
3. Step 3: Cross multiply
   139,718.76x = 193,007.94 × 124,606.58
4. Step 4: Simplify right side
   139,718.76x = 24,050,059,316.25
5. Step 5: Solve for x
   x = 24,050,059,316.25/139,718.76
6. Step 6: Final answer
   x = 172,131.93