Finding the Fourth Proportional to 42,507.36, 58,741.20 and 31,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,507.36 : 58,741.20 = 31,878.72 : x
2. Step 2: Convert to fraction form
   42,507.36/58,741.20 = 31,878.72/x
3. Step 3: Cross multiply
   42,507.36x = 58,741.20 × 31,878.72
4. Step 4: Simplify right side
   42,507.36x = 1,872,594,267.26
5. Step 5: Solve for x
   x = 1,872,594,267.26/42,507.36
6. Step 6: Final answer
   x = 44,053.41