Finding the Fourth Proportional to 116,394.37, 174,678.51 and 78,865.45

Step by Step Solution

1. Step 1: Write the proportion equation
   116,394.37 : 174,678.51 = 78,865.45 : x
2. Step 2: Convert to fraction form
   116,394.37/174,678.51 = 78,865.45/x
3. Step 3: Cross multiply
   116,394.37x = 174,678.51 × 78,865.45
4. Step 4: Simplify right side
   116,394.37x = 13,776,099,296.48
5. Step 5: Solve for x
   x = 13,776,099,296.48/116,394.37
6. Step 6: Final answer
   x = 118,357.09