Finding the Fourth Proportional to 55,969.72, 77,238.14 and 30,819

Step by Step Solution

1. Step 1: Write the proportion equation
   55,969.72 : 77,238.14 = 30,819 : x
2. Step 2: Convert to fraction form
   55,969.72/77,238.14 = 30,819/x
3. Step 3: Cross multiply
   55,969.72x = 77,238.14 × 30,819
4. Step 4: Simplify right side
   55,969.72x = 2,380,402,236.66
5. Step 5: Solve for x
   x = 2,380,402,236.66/55,969.72
6. Step 6: Final answer
   x = 42,530.18