Finding the Fourth Proportional to 77,080.65, 115,398.17 and 47,408.52

Step by Step Solution

1. Step 1: Write the proportion equation
   77,080.65 : 115,398.17 = 47,408.52 : x
2. Step 2: Convert to fraction form
   77,080.65/115,398.17 = 47,408.52/x
3. Step 3: Cross multiply
   77,080.65x = 115,398.17 × 47,408.52
4. Step 4: Simplify right side
   77,080.65x = 5,470,856,823.89
5. Step 5: Solve for x
   x = 5,470,856,823.89/77,080.65
6. Step 6: Final answer
   x = 70,975.75