Finding the Fourth Proportional to 250,530.78, 345,732.06 and 137,360.82

Step by Step Solution

1. Step 1: Write the proportion equation
   250,530.78 : 345,732.06 = 137,360.82 : x
2. Step 2: Convert to fraction form
   250,530.78/345,732.06 = 137,360.82/x
3. Step 3: Cross multiply
   250,530.78x = 345,732.06 × 137,360.82
4. Step 4: Simplify right side
   250,530.78x = 47,490,039,261.89
5. Step 5: Solve for x
   x = 47,490,039,261.89/250,530.78
6. Step 6: Final answer
   x = 189,557.70