Finding the Fourth Proportional to 81,730.72, 122,529.76 and 29,111.52

Step by Step Solution

1. Step 1: Write the proportion equation
   81,730.72 : 122,529.76 = 29,111.52 : x
2. Step 2: Convert to fraction form
   81,730.72/122,529.76 = 29,111.52/x
3. Step 3: Cross multiply
   81,730.72x = 122,529.76 × 29,111.52
4. Step 4: Simplify right side
   81,730.72x = 3,567,027,558.84
5. Step 5: Solve for x
   x = 3,567,027,558.84/81,730.72
6. Step 6: Final answer
   x = 43,643.66