Finding the Fourth Proportional to 116,622.33, 160,988.48 and 78,404.05

Step by Step Solution

1. Step 1: Write the proportion equation
   116,622.33 : 160,988.48 = 78,404.05 : x
2. Step 2: Convert to fraction form
   116,622.33/160,988.48 = 78,404.05/x
3. Step 3: Cross multiply
   116,622.33x = 160,988.48 × 78,404.05
4. Step 4: Simplify right side
   116,622.33x = 12,622,148,835.34
5. Step 5: Solve for x
   x = 12,622,148,835.34/116,622.33
6. Step 6: Final answer
   x = 108,230.98