Finding the Fourth Proportional to 116,870.16, 161,292.16 and 69,138.86

Step by Step Solution

1. Step 1: Write the proportion equation
   116,870.16 : 161,292.16 = 69,138.86 : x
2. Step 2: Convert to fraction form
   116,870.16/161,292.16 = 69,138.86/x
3. Step 3: Cross multiply
   116,870.16x = 161,292.16 × 69,138.86
4. Step 4: Simplify right side
   116,870.16x = 11,151,556,069.34
5. Step 5: Solve for x
   x = 11,151,556,069.34/116,870.16
6. Step 6: Final answer
   x = 95,418.33