Finding the Fourth Proportional to 108,128.34, 162,088.35 and 72,599.38

Step by Step Solution

1. Step 1: Write the proportion equation
   108,128.34 : 162,088.35 = 72,599.38 : x
2. Step 2: Convert to fraction form
   108,128.34/162,088.35 = 72,599.38/x
3. Step 3: Cross multiply
   108,128.34x = 162,088.35 × 72,599.38
4. Step 4: Simplify right side
   108,128.34x = 11,767,513,715.22
5. Step 5: Solve for x
   x = 11,767,513,715.22/108,128.34
6. Step 6: Final answer
   x = 108,829.14