Finding the Fourth Proportional to 78,900.18, 118,309.47 and 28,967.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,900.18 : 118,309.47 = 28,967.46 : x
2. Step 2: Convert to fraction form
   78,900.18/118,309.47 = 28,967.46/x
3. Step 3: Cross multiply
   78,900.18x = 118,309.47 × 28,967.46
4. Step 4: Simplify right side
   78,900.18x = 3,427,124,839.85
5. Step 5: Solve for x
   x = 3,427,124,839.85/78,900.18
6. Step 6: Final answer
   x = 43,436.21