Finding the Fourth Proportional to 61,055.22, 91,509 and 31,456.90

Step by Step Solution

1. Step 1: Write the proportion equation
   61,055.22 : 91,509 = 31,456.90 : x
2. Step 2: Convert to fraction form
   61,055.22/91,509 = 31,456.90/x
3. Step 3: Cross multiply
   61,055.22x = 91,509 × 31,456.90
4. Step 4: Simplify right side
   61,055.22x = 2,878,589,462.10
5. Step 5: Solve for x
   x = 2,878,589,462.10/61,055.22
6. Step 6: Final answer
   x = 47,147.31