Finding the Fourth Proportional to 58,637.15, 80,919.06 and 31,780.31

Step by Step Solution

1. Step 1: Write the proportion equation
   58,637.15 : 80,919.06 = 31,780.31 : x
2. Step 2: Convert to fraction form
   58,637.15/80,919.06 = 31,780.31/x
3. Step 3: Cross multiply
   58,637.15x = 80,919.06 × 31,780.31
4. Step 4: Simplify right side
   58,637.15x = 2,571,632,811.71
5. Step 5: Solve for x
   x = 2,571,632,811.71/58,637.15
6. Step 6: Final answer
   x = 43,856.72