Finding the Fourth Proportional to 268,243.82, 402,428.00 and 78,696.53

Step by Step Solution

1. Step 1: Write the proportion equation
   268,243.82 : 402,428.00 = 78,696.53 : x
2. Step 2: Convert to fraction form
   268,243.82/402,428.00 = 78,696.53/x
3. Step 3: Cross multiply
   268,243.82x = 402,428.00 × 78,696.53
4. Step 4: Simplify right side
   268,243.82x = 31,669,684,769.22
5. Step 5: Solve for x
   x = 31,669,684,769.22/268,243.82
6. Step 6: Final answer
   x = 118,063.06