Finding the Fourth Proportional to 139,964.85, 209,802.59 and 65,023.85

Step by Step Solution

1. Step 1: Write the proportion equation
   139,964.85 : 209,802.59 = 65,023.85 : x
2. Step 2: Convert to fraction form
   139,964.85/209,802.59 = 65,023.85/x
3. Step 3: Cross multiply
   139,964.85x = 209,802.59 × 65,023.85
4. Step 4: Simplify right side
   139,964.85x = 13,642,172,141.77
5. Step 5: Solve for x
   x = 13,642,172,141.77/139,964.85
6. Step 6: Final answer
   x = 97,468.56