Finding the Fourth Proportional to 78,564.13, 108,418.83 and 42,754.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,564.13 : 108,418.83 = 42,754.09 : x
2. Step 2: Convert to fraction form
   78,564.13/108,418.83 = 42,754.09/x
3. Step 3: Cross multiply
   78,564.13x = 108,418.83 × 42,754.09
4. Step 4: Simplify right side
   78,564.13x = 4,635,348,415.51
5. Step 5: Solve for x
   x = 4,635,348,415.51/78,564.13
6. Step 6: Final answer
   x = 59,000.82