Finding the Fourth Proportional to 112,772.74, 169,106.15 and 65,401.30

Step by Step Solution

1. Step 1: Write the proportion equation
   112,772.74 : 169,106.15 = 65,401.30 : x
2. Step 2: Convert to fraction form
   112,772.74/169,106.15 = 65,401.30/x
3. Step 3: Cross multiply
   112,772.74x = 169,106.15 × 65,401.30
4. Step 4: Simplify right side
   112,772.74x = 11,059,762,048.00
5. Step 5: Solve for x
   x = 11,059,762,048.00/112,772.74
6. Step 6: Final answer
   x = 98,071.24