Finding the Fourth Proportional to 78,300.09, 117,371.30 and 45,010.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,300.09 : 117,371.30 = 45,010.17 : x
2. Step 2: Convert to fraction form
   78,300.09/117,371.30 = 45,010.17/x
3. Step 3: Cross multiply
   78,300.09x = 117,371.30 × 45,010.17
4. Step 4: Simplify right side
   78,300.09x = 5,282,901,941.07
5. Step 5: Solve for x
   x = 5,282,901,941.07/78,300.09
6. Step 6: Final answer
   x = 67,469.93