Finding the Fourth Proportional to 78,428.06, 108,227.83 and 42,617.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,428.06 : 108,227.83 = 42,617.32 : x
2. Step 2: Convert to fraction form
   78,428.06/108,227.83 = 42,617.32/x
3. Step 3: Cross multiply
   78,428.06x = 108,227.83 × 42,617.32
4. Step 4: Simplify right side
   78,428.06x = 4,612,380,064.02
5. Step 5: Solve for x
   x = 4,612,380,064.02/78,428.06
6. Step 6: Final answer
   x = 58,810.33