Finding the Fourth Proportional to 76,448.32, 105,500.09 and 42,459.95

Step by Step Solution

1. Step 1: Write the proportion equation
   76,448.32 : 105,500.09 = 42,459.95 : x
2. Step 2: Convert to fraction form
   76,448.32/105,500.09 = 42,459.95/x
3. Step 3: Cross multiply
   76,448.32x = 105,500.09 × 42,459.95
4. Step 4: Simplify right side
   76,448.32x = 4,479,528,916.30
5. Step 5: Solve for x
   x = 4,479,528,916.30/76,448.32
6. Step 6: Final answer
   x = 58,595.52