Finding the Fourth Proportional to 308,375.59, 425,534.83 and 187,500.10

Step by Step Solution

1. Step 1: Write the proportion equation
   308,375.59 : 425,534.83 = 187,500.10 : x
2. Step 2: Convert to fraction form
   308,375.59/425,534.83 = 187,500.10/x
3. Step 3: Cross multiply
   308,375.59x = 425,534.83 × 187,500.10
4. Step 4: Simplify right side
   308,375.59x = 79,787,823,178.48
5. Step 5: Solve for x
   x = 79,787,823,178.48/308,375.59
6. Step 6: Final answer
   x = 258,735.86