Finding the Fourth Proportional to 58,788.75, 81,128.72 and 31,931.71

Step by Step Solution

1. Step 1: Write the proportion equation
   58,788.75 : 81,128.72 = 31,931.71 : x
2. Step 2: Convert to fraction form
   58,788.75/81,128.72 = 31,931.71/x
3. Step 3: Cross multiply
   58,788.75x = 81,128.72 × 31,931.71
4. Step 4: Simplify right side
   58,788.75x = 2,590,578,397.23
5. Step 5: Solve for x
   x = 2,590,578,397.23/58,788.75
6. Step 6: Final answer
   x = 44,065.89