Finding the Fourth Proportional to 42,507.64, 58,587.06 and 31,878.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,507.64 : 58,587.06 = 31,878.82 : x
2. Step 2: Convert to fraction form
   42,507.64/58,587.06 = 31,878.82/x
3. Step 3: Cross multiply
   42,507.64x = 58,587.06 × 31,878.82
4. Step 4: Simplify right side
   42,507.64x = 1,867,686,340.07
5. Step 5: Solve for x
   x = 1,867,686,340.07/42,507.64
6. Step 6: Final answer
   x = 43,937.66