Finding the Fourth Proportional to 398,111.51, 549,759.00 and 252,965.10

Step by Step Solution

1. Step 1: Write the proportion equation
   398,111.51 : 549,759.00 = 252,965.10 : x
2. Step 2: Convert to fraction form
   398,111.51/549,759.00 = 252,965.10/x
3. Step 3: Cross multiply
   398,111.51x = 549,759.00 × 252,965.10
4. Step 4: Simplify right side
   398,111.51x = 139,069,836,397.28
5. Step 5: Solve for x
   x = 139,069,836,397.28/398,111.51
6. Step 6: Final answer
   x = 349,323.83