Finding the Fourth Proportional to 78,390.09, 108,180.33 and 42,582.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,390.09 : 108,180.33 = 42,582.15 : x
2. Step 2: Convert to fraction form
   78,390.09/108,180.33 = 42,582.15/x
3. Step 3: Cross multiply
   78,390.09x = 108,180.33 × 42,582.15
4. Step 4: Simplify right side
   78,390.09x = 4,606,551,039.11
5. Step 5: Solve for x
   x = 4,606,551,039.11/78,390.09
6. Step 6: Final answer
   x = 58,764.46