Finding the Fourth Proportional to 115,274.56, 159,080.11 and 64,973.56

Step by Step Solution

1. Step 1: Write the proportion equation
   115,274.56 : 159,080.11 = 64,973.56 : x
2. Step 2: Convert to fraction form
   115,274.56/159,080.11 = 64,973.56/x
3. Step 3: Cross multiply
   115,274.56x = 159,080.11 × 64,973.56
4. Step 4: Simplify right side
   115,274.56x = 10,336,001,071.89
5. Step 5: Solve for x
   x = 10,336,001,071.89/115,274.56
6. Step 6: Final answer
   x = 89,664.20