Finding the Fourth Proportional to 329,998.73, 455,488.52 and 307,560.11

Step by Step Solution

1. Step 1: Write the proportion equation
   329,998.73 : 455,488.52 = 307,560.11 : x
2. Step 2: Convert to fraction form
   329,998.73/455,488.52 = 307,560.11/x
3. Step 3: Cross multiply
   329,998.73x = 455,488.52 × 307,560.11
4. Step 4: Simplify right side
   329,998.73x = 140,090,095,499.69
5. Step 5: Solve for x
   x = 140,090,095,499.69/329,998.73
6. Step 6: Final answer
   x = 424,517.08