Finding the Fourth Proportional to 61,212.56, 91,622.00 and 31,590.05

Step by Step Solution

1. Step 1: Write the proportion equation
   61,212.56 : 91,622.00 = 31,590.05 : x
2. Step 2: Convert to fraction form
   61,212.56/91,622.00 = 31,590.05/x
3. Step 3: Cross multiply
   61,212.56x = 91,622.00 × 31,590.05
4. Step 4: Simplify right side
   61,212.56x = 2,894,342,945.04
5. Step 5: Solve for x
   x = 2,894,342,945.04/61,212.56
6. Step 6: Final answer
   x = 47,283.49