Finding the Fourth Proportional to 42,012.16, 62,931.84 and 30,348.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.16 : 62,931.84 = 30,348.80 : x
2. Step 2: Convert to fraction form
   42,012.16/62,931.84 = 30,348.80/x
3. Step 3: Cross multiply
   42,012.16x = 62,931.84 × 30,348.80
4. Step 4: Simplify right side
   42,012.16x = 1,909,905,825.79
5. Step 5: Solve for x
   x = 1,909,905,825.79/42,012.16
6. Step 6: Final answer
   x = 45,460.79