Finding the Fourth Proportional to 53,611.30, 80,289.83 and 42,482.21

Step by Step Solution

1. Step 1: Write the proportion equation
   53,611.30 : 80,289.83 = 42,482.21 : x
2. Step 2: Convert to fraction form
   53,611.30/80,289.83 = 42,482.21/x
3. Step 3: Cross multiply
   53,611.30x = 80,289.83 × 42,482.21
4. Step 4: Simplify right side
   53,611.30x = 3,410,889,123.68
5. Step 5: Solve for x
   x = 3,410,889,123.68/53,611.30
6. Step 6: Final answer
   x = 63,622.58