Finding the Fourth Proportional to 72,518.50, 108,764.76 and 46,144.90

Step by Step Solution

1. Step 1: Write the proportion equation
   72,518.50 : 108,764.76 = 46,144.90 : x
2. Step 2: Convert to fraction form
   72,518.50/108,764.76 = 46,144.90/x
3. Step 3: Cross multiply
   72,518.50x = 108,764.76 × 46,144.90
4. Step 4: Simplify right side
   72,518.50x = 5,018,938,973.72
5. Step 5: Solve for x
   x = 5,018,938,973.72/72,518.50
6. Step 6: Final answer
   x = 69,209.08