Finding the Fourth Proportional to 288,865.82, 433,297.52 and 78,503.16

Step by Step Solution

1. Step 1: Write the proportion equation
   288,865.82 : 433,297.52 = 78,503.16 : x
2. Step 2: Convert to fraction form
   288,865.82/433,297.52 = 78,503.16/x
3. Step 3: Cross multiply
   288,865.82x = 433,297.52 × 78,503.16
4. Step 4: Simplify right side
   288,865.82x = 34,015,224,540.16
5. Step 5: Solve for x
   x = 34,015,224,540.16/288,865.82
6. Step 6: Final answer
   x = 117,754.41