Finding the Fourth Proportional to 76,189.36, 105,128.82 and 47,875

Step by Step Solution

1. Step 1: Write the proportion equation
   76,189.36 : 105,128.82 = 47,875 : x
2. Step 2: Convert to fraction form
   76,189.36/105,128.82 = 47,875/x
3. Step 3: Cross multiply
   76,189.36x = 105,128.82 × 47,875
4. Step 4: Simplify right side
   76,189.36x = 5,033,042,257.50
5. Step 5: Solve for x
   x = 5,033,042,257.50/76,189.36
6. Step 6: Final answer
   x = 66,059.65