Finding the Fourth Proportional to 112,514.19, 155,196.42 and 72,164.04

Step by Step Solution

1. Step 1: Write the proportion equation
   112,514.19 : 155,196.42 = 72,164.04 : x
2. Step 2: Convert to fraction form
   112,514.19/155,196.42 = 72,164.04/x
3. Step 3: Cross multiply
   112,514.19x = 155,196.42 × 72,164.04
4. Step 4: Simplify right side
   112,514.19x = 11,199,600,660.74
5. Step 5: Solve for x
   x = 11,199,600,660.74/112,514.19
6. Step 6: Final answer
   x = 99,539.45