Finding the Fourth Proportional to 72,401.10, 108,698.85 and 46,221.90

Step by Step Solution

1. Step 1: Write the proportion equation
   72,401.10 : 108,698.85 = 46,221.90 : x
2. Step 2: Convert to fraction form
   72,401.10/108,698.85 = 46,221.90/x
3. Step 3: Cross multiply
   72,401.10x = 108,698.85 × 46,221.90
4. Step 4: Simplify right side
   72,401.10x = 5,024,267,374.82
5. Step 5: Solve for x
   x = 5,024,267,374.82/72,401.10
6. Step 6: Final answer
   x = 69,394.90