Finding the Fourth Proportional to 78,572.13, 108,431.83 and 42,764.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,572.13 : 108,431.83 = 42,764.46 : x
2. Step 2: Convert to fraction form
   78,572.13/108,431.83 = 42,764.46/x
3. Step 3: Cross multiply
   78,572.13x = 108,431.83 × 42,764.46
4. Step 4: Simplify right side
   78,572.13x = 4,637,028,303.60
5. Step 5: Solve for x
   x = 4,637,028,303.60/78,572.13
6. Step 6: Final answer
   x = 59,016.20