Finding the Fourth Proportional to 112,526.13, 155,144.91 and 72,168.69

Step by Step Solution

1. Step 1: Write the proportion equation
   112,526.13 : 155,144.91 = 72,168.69 : x
2. Step 2: Convert to fraction form
   112,526.13/155,144.91 = 72,168.69/x
3. Step 3: Cross multiply
   112,526.13x = 155,144.91 × 72,168.69
4. Step 4: Simplify right side
   112,526.13x = 11,196,604,914.87
5. Step 5: Solve for x
   x = 11,196,604,914.87/112,526.13
6. Step 6: Final answer
   x = 99,502.27