Finding the Fourth Proportional to 76,435, 105,481.02 and 42,901.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,435 : 105,481.02 = 42,901.72 : x
2. Step 2: Convert to fraction form
   76,435/105,481.02 = 42,901.72/x
3. Step 3: Cross multiply
   76,435x = 105,481.02 × 42,901.72
4. Step 4: Simplify right side
   76,435x = 4,525,317,185.35
5. Step 5: Solve for x
   x = 4,525,317,185.35/76,435
6. Step 6: Final answer
   x = 59,204.78