Finding the Fourth Proportional to 498,345.83, 747,492.61 and 143,345.91

Step by Step Solution

1. Step 1: Write the proportion equation
   498,345.83 : 747,492.61 = 143,345.91 : x
2. Step 2: Convert to fraction form
   498,345.83/747,492.61 = 143,345.91/x
3. Step 3: Cross multiply
   498,345.83x = 747,492.61 × 143,345.91
4. Step 4: Simplify right side
   498,345.83x = 107,150,008,398.73
5. Step 5: Solve for x
   x = 107,150,008,398.73/498,345.83
6. Step 6: Final answer
   x = 215,011.35