Finding the Fourth Proportional to 519,498.05, 716,900.27 and 290,058.86

Step by Step Solution

1. Step 1: Write the proportion equation
   519,498.05 : 716,900.27 = 290,058.86 : x
2. Step 2: Convert to fraction form
   519,498.05/716,900.27 = 290,058.86/x
3. Step 3: Cross multiply
   519,498.05x = 716,900.27 × 290,058.86
4. Step 4: Simplify right side
   519,498.05x = 207,943,270,015.10
5. Step 5: Solve for x
   x = 207,943,270,015.10/519,498.05
6. Step 6: Final answer
   x = 400,277.29