Finding the Fourth Proportional to 153,668, 212,061.88 and 83,012

Step by Step Solution

1. Step 1: Write the proportion equation
   153,668 : 212,061.88 = 83,012 : x
2. Step 2: Convert to fraction form
   153,668/212,061.88 = 83,012/x
3. Step 3: Cross multiply
   153,668x = 212,061.88 × 83,012
4. Step 4: Simplify right side
   153,668x = 17,603,680,782.56
5. Step 5: Solve for x
   x = 17,603,680,782.56/153,668
6. Step 6: Final answer
   x = 114,556.58