Finding the Fourth Proportional to 78,023.02, 107,671.81 and 42,212.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,023.02 : 107,671.81 = 42,212.92 : x
2. Step 2: Convert to fraction form
   78,023.02/107,671.81 = 42,212.92/x
3. Step 3: Cross multiply
   78,023.02x = 107,671.81 × 42,212.92
4. Step 4: Simplify right side
   78,023.02x = 4,545,141,501.79
5. Step 5: Solve for x
   x = 4,545,141,501.79/78,023.02
6. Step 6: Final answer
   x = 58,253.85