Finding the Fourth Proportional to 55,808.62, 77,016.72 and 30,315.48

Step by Step Solution

1. Step 1: Write the proportion equation
   55,808.62 : 77,016.72 = 30,315.48 : x
2. Step 2: Convert to fraction form
   55,808.62/77,016.72 = 30,315.48/x
3. Step 3: Cross multiply
   55,808.62x = 77,016.72 × 30,315.48
4. Step 4: Simplify right side
   55,808.62x = 2,334,798,298.16
5. Step 5: Solve for x
   x = 2,334,798,298.16/55,808.62
6. Step 6: Final answer
   x = 41,835.80