Finding the Fourth Proportional to 63,078.51, 86,980.53 and 62,147.82

Step by Step Solution

1. Step 1: Write the proportion equation
   63,078.51 : 86,980.53 = 62,147.82 : x
2. Step 2: Convert to fraction form
   63,078.51/86,980.53 = 62,147.82/x
3. Step 3: Cross multiply
   63,078.51x = 86,980.53 × 62,147.82
4. Step 4: Simplify right side
   63,078.51x = 5,405,650,321.94
5. Step 5: Solve for x
   x = 5,405,650,321.94/63,078.51
6. Step 6: Final answer
   x = 85,697.18