Finding the Fourth Proportional to 72,870.75, 100,605.38 and 47,763.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72,870.75 : 100,605.38 = 47,763.99 : x
2. Step 2: Convert to fraction form
   72,870.75/100,605.38 = 47,763.99/x
3. Step 3: Cross multiply
   72,870.75x = 100,605.38 × 47,763.99
4. Step 4: Simplify right side
   72,870.75x = 4,805,314,125.45
5. Step 5: Solve for x
   x = 4,805,314,125.45/72,870.75
6. Step 6: Final answer
   x = 65,942.98