Finding the Fourth Proportional to 290,820.10, 435,906.15 and 113,268.10

Step by Step Solution

1. Step 1: Write the proportion equation
   290,820.10 : 435,906.15 = 113,268.10 : x
2. Step 2: Convert to fraction form
   290,820.10/435,906.15 = 113,268.10/x
3. Step 3: Cross multiply
   290,820.10x = 435,906.15 × 113,268.10
4. Step 4: Simplify right side
   290,820.10x = 49,374,261,388.82
5. Step 5: Solve for x
   x = 49,374,261,388.82/290,820.10
6. Step 6: Final answer
   x = 169,775.96