Finding the Fourth Proportional to 140,009.33, 209,976.32 and 51,263.30

Step by Step Solution

1. Step 1: Write the proportion equation
   140,009.33 : 209,976.32 = 51,263.30 : x
2. Step 2: Convert to fraction form
   140,009.33/209,976.32 = 51,263.30/x
3. Step 3: Cross multiply
   140,009.33x = 209,976.32 × 51,263.30
4. Step 4: Simplify right side
   140,009.33x = 10,764,078,035.17
5. Step 5: Solve for x
   x = 10,764,078,035.17/140,009.33
6. Step 6: Final answer
   x = 76,881.15