Finding the Fourth Proportional to 399,058.93, 598,798.59 and 230,697.50

Step by Step Solution

1. Step 1: Write the proportion equation
   399,058.93 : 598,798.59 = 230,697.50 : x
2. Step 2: Convert to fraction form
   399,058.93/598,798.59 = 230,697.50/x
3. Step 3: Cross multiply
   399,058.93x = 598,798.59 × 230,697.50
4. Step 4: Simplify right side
   399,058.93x = 138,141,333,857.42
5. Step 5: Solve for x
   x = 138,141,333,857.42/399,058.93
6. Step 6: Final answer
   x = 346,167.75