Finding the Fourth Proportional to 42,063.60, 58,051.86 and 31,434.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,063.60 : 58,051.86 = 31,434.78 : x
2. Step 2: Convert to fraction form
   42,063.60/58,051.86 = 31,434.78/x
3. Step 3: Cross multiply
   42,063.60x = 58,051.86 × 31,434.78
4. Step 4: Simplify right side
   42,063.60x = 1,824,847,447.69
5. Step 5: Solve for x
   x = 1,824,847,447.69/42,063.60
6. Step 6: Final answer
   x = 43,383.05