Finding the Fourth Proportional to 117,960.25, 177,002.72 and 51,405.59

Step by Step Solution

1. Step 1: Write the proportion equation
   117,960.25 : 177,002.72 = 51,405.59 : x
2. Step 2: Convert to fraction form
   117,960.25/177,002.72 = 51,405.59/x
3. Step 3: Cross multiply
   117,960.25x = 177,002.72 × 51,405.59
4. Step 4: Simplify right side
   117,960.25x = 9,098,928,635.81
5. Step 5: Solve for x
   x = 9,098,928,635.81/117,960.25
6. Step 6: Final answer
   x = 77,135.55