Finding the Fourth Proportional to 403,499.66, 604,431.38 and 187,054.16

Step by Step Solution

1. Step 1: Write the proportion equation
   403,499.66 : 604,431.38 = 187,054.16 : x
2. Step 2: Convert to fraction form
   403,499.66/604,431.38 = 187,054.16/x
3. Step 3: Cross multiply
   403,499.66x = 604,431.38 × 187,054.16
4. Step 4: Simplify right side
   403,499.66x = 113,061,404,063.54
5. Step 5: Solve for x
   x = 113,061,404,063.54/403,499.66
6. Step 6: Final answer
   x = 280,201.98