Finding the Fourth Proportional to 42,942, 59,239.80 and 30,373.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,942 : 59,239.80 = 30,373.68 : x
2. Step 2: Convert to fraction form
   42,942/59,239.80 = 30,373.68/x
3. Step 3: Cross multiply
   42,942x = 59,239.80 × 30,373.68
4. Step 4: Simplify right side
   42,942x = 1,799,330,728.46
5. Step 5: Solve for x
   x = 1,799,330,728.46/42,942
6. Step 6: Final answer
   x = 41,901.42