Finding the Fourth Proportional to 78,838.04, 108,914.98 and 51,678.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,838.04 : 108,914.98 = 51,678.60 : x
2. Step 2: Convert to fraction form
   78,838.04/108,914.98 = 51,678.60/x
3. Step 3: Cross multiply
   78,838.04x = 108,914.98 × 51,678.60
4. Step 4: Simplify right side
   78,838.04x = 5,628,573,685.43
5. Step 5: Solve for x
   x = 5,628,573,685.43/78,838.04
6. Step 6: Final answer
   x = 71,394.14