Finding the Fourth Proportional to 139,810.33, 209,748.75 and 45,049.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,810.33 : 209,748.75 = 45,049.48 : x
2. Step 2: Convert to fraction form
   139,810.33/209,748.75 = 45,049.48/x
3. Step 3: Cross multiply
   139,810.33x = 209,748.75 × 45,049.48
4. Step 4: Simplify right side
   139,810.33x = 9,449,072,118.15
5. Step 5: Solve for x
   x = 9,449,072,118.15/139,810.33
6. Step 6: Final answer
   x = 67,584.94