Finding the Fourth Proportional to 78,027.40, 107,677.05 and 42,216.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,027.40 : 107,677.05 = 42,216.63 : x
2. Step 2: Convert to fraction form
   78,027.40/107,677.05 = 42,216.63/x
3. Step 3: Cross multiply
   78,027.40x = 107,677.05 × 42,216.63
4. Step 4: Simplify right side
   78,027.40x = 4,545,761,910.15
5. Step 5: Solve for x
   x = 4,545,761,910.15/78,027.40
6. Step 6: Final answer
   x = 58,258.53