Finding the Fourth Proportional to 55,484.72, 76,576 and 31,620

Step by Step Solution

1. Step 1: Write the proportion equation
   55,484.72 : 76,576 = 31,620 : x
2. Step 2: Convert to fraction form
   55,484.72/76,576 = 31,620/x
3. Step 3: Cross multiply
   55,484.72x = 76,576 × 31,620
4. Step 4: Simplify right side
   55,484.72x = 2,421,333,120
5. Step 5: Solve for x
   x = 2,421,333,120/55,484.72
6. Step 6: Final answer
   x = 43,639.64