Finding the Fourth Proportional to 77,645.98, 107,155.38 and 47,426.41

Step by Step Solution

1. Step 1: Write the proportion equation
   77,645.98 : 107,155.38 = 47,426.41 : x
2. Step 2: Convert to fraction form
   77,645.98/107,155.38 = 47,426.41/x
3. Step 3: Cross multiply
   77,645.98x = 107,155.38 × 47,426.41
4. Step 4: Simplify right side
   77,645.98x = 5,081,994,985.59
5. Step 5: Solve for x
   x = 5,081,994,985.59/77,645.98
6. Step 6: Final answer
   x = 65,450.84