Finding the Fourth Proportional to 77,909.97, 116,780.72 and 31,111.41

Step by Step Solution

1. Step 1: Write the proportion equation
   77,909.97 : 116,780.72 = 31,111.41 : x
2. Step 2: Convert to fraction form
   77,909.97/116,780.72 = 31,111.41/x
3. Step 3: Cross multiply
   77,909.97x = 116,780.72 × 31,111.41
4. Step 4: Simplify right side
   77,909.97x = 3,633,212,704.46
5. Step 5: Solve for x
   x = 3,633,212,704.46/77,909.97
6. Step 6: Final answer
   x = 46,633.48