Finding the Fourth Proportional to 81,749.60, 112,820.72 and 47,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   81,749.60 : 112,820.72 = 47,300.56 : x
2. Step 2: Convert to fraction form
   81,749.60/112,820.72 = 47,300.56/x
3. Step 3: Cross multiply
   81,749.60x = 112,820.72 × 47,300.56
4. Step 4: Simplify right side
   81,749.60x = 5,336,483,116.15
5. Step 5: Solve for x
   x = 5,336,483,116.15/81,749.60
6. Step 6: Final answer
   x = 65,278.40