Finding the Fourth Proportional to 111,209, 153,468.42 and 60,909.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,209 : 153,468.42 = 60,909.80 : x
2. Step 2: Convert to fraction form
   111,209/153,468.42 = 60,909.80/x
3. Step 3: Cross multiply
   111,209x = 153,468.42 × 60,909.80
4. Step 4: Simplify right side
   111,209x = 9,347,730,768.52
5. Step 5: Solve for x
   x = 9,347,730,768.52/111,209
6. Step 6: Final answer
   x = 84,055.52