Finding the Fourth Proportional to 55,061.12, 75,990.72 and 51,683.24

Step by Step Solution

1. Step 1: Write the proportion equation
   55,061.12 : 75,990.72 = 51,683.24 : x
2. Step 2: Convert to fraction form
   55,061.12/75,990.72 = 51,683.24/x
3. Step 3: Cross multiply
   55,061.12x = 75,990.72 × 51,683.24
4. Step 4: Simplify right side
   55,061.12x = 3,927,446,619.53
5. Step 5: Solve for x
   x = 3,927,446,619.53/55,061.12
6. Step 6: Final answer
   x = 71,328.85