Finding the Fourth Proportional to 78,620.04, 108,494.10 and 42,810.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,620.04 : 108,494.10 = 42,810.48 : x
2. Step 2: Convert to fraction form
   78,620.04/108,494.10 = 42,810.48/x
3. Step 3: Cross multiply
   78,620.04x = 108,494.10 × 42,810.48
4. Step 4: Simplify right side
   78,620.04x = 4,644,684,498.17
5. Step 5: Solve for x
   x = 4,644,684,498.17/78,620.04
6. Step 6: Final answer
   x = 59,077.62