Finding the Fourth Proportional to 42,299.39, 63,475.42 and 38,357.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,299.39 : 63,475.42 = 38,357.78 : x
2. Step 2: Convert to fraction form
   42,299.39/63,475.42 = 38,357.78/x
3. Step 3: Cross multiply
   42,299.39x = 63,475.42 × 38,357.78
4. Step 4: Simplify right side
   42,299.39x = 2,434,776,258.56
5. Step 5: Solve for x
   x = 2,434,776,258.56/42,299.39
6. Step 6: Final answer
   x = 57,560.55