Finding the Fourth Proportional to 61,111.72, 91,752.72 and 31,550.86

Step by Step Solution

1. Step 1: Write the proportion equation
   61,111.72 : 91,752.72 = 31,550.86 : x
2. Step 2: Convert to fraction form
   61,111.72/91,752.72 = 31,550.86/x
3. Step 3: Cross multiply
   61,111.72x = 91,752.72 × 31,550.86
4. Step 4: Simplify right side
   61,111.72x = 2,894,877,223.34
5. Step 5: Solve for x
   x = 2,894,877,223.34/61,111.72
6. Step 6: Final answer
   x = 47,370.25