Finding the Fourth Proportional to 78,297.30, 117,445.62 and 28,365.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,297.30 : 117,445.62 = 28,365.69 : x
2. Step 2: Convert to fraction form
   78,297.30/117,445.62 = 28,365.69/x
3. Step 3: Cross multiply
   78,297.30x = 117,445.62 × 28,365.69
4. Step 4: Simplify right side
   78,297.30x = 3,331,426,048.78
5. Step 5: Solve for x
   x = 3,331,426,048.78/78,297.30
6. Step 6: Final answer
   x = 42,548.42