Finding the Fourth Proportional to 402,993.34, 604,468.14 and 122,488.72

Step by Step Solution

1. Step 1: Write the proportion equation
   402,993.34 : 604,468.14 = 122,488.72 : x
2. Step 2: Convert to fraction form
   402,993.34/604,468.14 = 122,488.72/x
3. Step 3: Cross multiply
   402,993.34x = 604,468.14 × 122,488.72
4. Step 4: Simplify right side
   402,993.34x = 74,040,528,749.38
5. Step 5: Solve for x
   x = 74,040,528,749.38/402,993.34
6. Step 6: Final answer
   x = 183,726.43