Finding the Fourth Proportional to 288,867.82, 433,300.52 and 78,505.16

Step by Step Solution

1. Step 1: Write the proportion equation
   288,867.82 : 433,300.52 = 78,505.16 : x
2. Step 2: Convert to fraction form
   288,867.82/433,300.52 = 78,505.16/x
3. Step 3: Cross multiply
   288,867.82x = 433,300.52 × 78,505.16
4. Step 4: Simplify right side
   288,867.82x = 34,016,326,650.68
5. Step 5: Solve for x
   x = 34,016,326,650.68/288,867.82
6. Step 6: Final answer
   x = 117,757.41