Finding the Fourth Proportional to 123,858.56, 185,784.42 and 39,618.05

Step by Step Solution

1. Step 1: Write the proportion equation
   123,858.56 : 185,784.42 = 39,618.05 : x
2. Step 2: Convert to fraction form
   123,858.56/185,784.42 = 39,618.05/x
3. Step 3: Cross multiply
   123,858.56x = 185,784.42 × 39,618.05
4. Step 4: Simplify right side
   123,858.56x = 7,360,416,440.78
5. Step 5: Solve for x
   x = 7,360,416,440.78/123,858.56
6. Step 6: Final answer
   x = 59,425.98