Finding the Fourth Proportional to 76,171.24, 105,111.30 and 42,630.76

Step by Step Solution

1. Step 1: Write the proportion equation
   76,171.24 : 105,111.30 = 42,630.76 : x
2. Step 2: Convert to fraction form
   76,171.24/105,111.30 = 42,630.76/x
3. Step 3: Cross multiply
   76,171.24x = 105,111.30 × 42,630.76
4. Step 4: Simplify right side
   76,171.24x = 4,480,974,603.59
5. Step 5: Solve for x
   x = 4,480,974,603.59/76,171.24
6. Step 6: Final answer
   x = 58,827.64