Finding the Fourth Proportional to 78,585.10, 108,450.30 and 42,773.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,585.10 : 108,450.30 = 42,773.38 : x
2. Step 2: Convert to fraction form
   78,585.10/108,450.30 = 42,773.38/x
3. Step 3: Cross multiply
   78,585.10x = 108,450.30 × 42,773.38
4. Step 4: Simplify right side
   78,585.10x = 4,638,785,893.01
5. Step 5: Solve for x
   x = 4,638,785,893.01/78,585.10
6. Step 6: Final answer
   x = 59,028.82