Finding the Fourth Proportional to 78,242.92, 107,975.22 and 42,433

Step by Step Solution

1. Step 1: Write the proportion equation
   78,242.92 : 107,975.22 = 42,433 : x
2. Step 2: Convert to fraction form
   78,242.92/107,975.22 = 42,433/x
3. Step 3: Cross multiply
   78,242.92x = 107,975.22 × 42,433
4. Step 4: Simplify right side
   78,242.92x = 4,581,712,510.26
5. Step 5: Solve for x
   x = 4,581,712,510.26/78,242.92
6. Step 6: Final answer
   x = 58,557.53