Finding the Fourth Proportional to 391,007.86, 586,522.06 and 124,768.10

Step by Step Solution

1. Step 1: Write the proportion equation
   391,007.86 : 586,522.06 = 124,768.10 : x
2. Step 2: Convert to fraction form
   391,007.86/586,522.06 = 124,768.10/x
3. Step 3: Cross multiply
   391,007.86x = 586,522.06 × 124,768.10
4. Step 4: Simplify right side
   391,007.86x = 73,179,241,591.30
5. Step 5: Solve for x
   x = 73,179,241,591.30/391,007.86
6. Step 6: Final answer
   x = 187,155.42