Finding the Fourth Proportional to 335,464.61, 503,196.98 and 98,807.31

Step by Step Solution

1. Step 1: Write the proportion equation
   335,464.61 : 503,196.98 = 98,807.31 : x
2. Step 2: Convert to fraction form
   335,464.61/503,196.98 = 98,807.31/x
3. Step 3: Cross multiply
   335,464.61x = 503,196.98 × 98,807.31
4. Step 4: Simplify right side
   335,464.61x = 49,719,539,499.89
5. Step 5: Solve for x
   x = 49,719,539,499.89/335,464.61
6. Step 6: Final answer
   x = 148,210.98