Finding the Fourth Proportional to 78,019.18, 107,667.24 and 42,209.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,019.18 : 107,667.24 = 42,209.96 : x
2. Step 2: Convert to fraction form
   78,019.18/107,667.24 = 42,209.96/x
3. Step 3: Cross multiply
   78,019.18x = 107,667.24 × 42,209.96
4. Step 4: Simplify right side
   78,019.18x = 4,544,629,501.81
5. Step 5: Solve for x
   x = 4,544,629,501.81/78,019.18
6. Step 6: Final answer
   x = 58,250.16