Finding the Fourth Proportional to 42,064.60, 58,053.24 and 31,435.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,064.60 : 58,053.24 = 31,435.78 : x
2. Step 2: Convert to fraction form
   42,064.60/58,053.24 = 31,435.78/x
3. Step 3: Cross multiply
   42,064.60x = 58,053.24 × 31,435.78
4. Step 4: Simplify right side
   42,064.60x = 1,824,948,880.93
5. Step 5: Solve for x
   x = 1,824,948,880.93/42,064.60
6. Step 6: Final answer
   x = 43,384.43