Finding the Fourth Proportional to 558,892.31, 835,763.27 and 415,069.72

Step by Step Solution

1. Step 1: Write the proportion equation
   558,892.31 : 835,763.27 = 415,069.72 : x
2. Step 2: Convert to fraction form
   558,892.31/835,763.27 = 415,069.72/x
3. Step 3: Cross multiply
   558,892.31x = 835,763.27 × 415,069.72
4. Step 4: Simplify right side
   558,892.31x = 346,900,022,300.43
5. Step 5: Solve for x
   x = 346,900,022,300.43/558,892.31
6. Step 6: Final answer
   x = 620,692.07