Finding the Fourth Proportional to 301,300.25, 415,989.12 and 186,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,300.25 : 415,989.12 = 186,700.50 : x
2. Step 2: Convert to fraction form
   301,300.25/415,989.12 = 186,700.50/x
3. Step 3: Cross multiply
   301,300.25x = 415,989.12 × 186,700.50
4. Step 4: Simplify right side
   301,300.25x = 77,665,377,398.69
5. Step 5: Solve for x
   x = 77,665,377,398.69/301,300.25
6. Step 6: Final answer
   x = 257,767.39