Finding the Fourth Proportional to 288,863.82, 433,294.52 and 78,501.15

Step by Step Solution

1. Step 1: Write the proportion equation
   288,863.82 : 433,294.52 = 78,501.15 : x
2. Step 2: Convert to fraction form
   288,863.82/433,294.52 = 78,501.15/x
3. Step 3: Cross multiply
   288,863.82x = 433,294.52 × 78,501.15
4. Step 4: Simplify right side
   288,863.82x = 34,014,117,716.19
5. Step 5: Solve for x
   x = 34,014,117,716.19/288,863.82
6. Step 6: Final answer
   x = 117,751.39