Finding the Fourth Proportional to 76,444.41, 105,489.72 and 42,455.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,444.41 : 105,489.72 = 42,455.10 : x
2. Step 2: Convert to fraction form
   76,444.41/105,489.72 = 42,455.10/x
3. Step 3: Cross multiply
   76,444.41x = 105,489.72 × 42,455.10
4. Step 4: Simplify right side
   76,444.41x = 4,478,576,611.57
5. Step 5: Solve for x
   x = 4,478,576,611.57/76,444.41
6. Step 6: Final answer
   x = 58,586.06