Finding the Fourth Proportional to 139,196.76, 208,727.10 and 97,097.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,196.76 : 208,727.10 = 97,097.01 : x
2. Step 2: Convert to fraction form
   139,196.76/208,727.10 = 97,097.01/x
3. Step 3: Cross multiply
   139,196.76x = 208,727.10 × 97,097.01
4. Step 4: Simplify right side
   139,196.76x = 20,266,777,315.97
5. Step 5: Solve for x
   x = 20,266,777,315.97/139,196.76
6. Step 6: Final answer
   x = 145,598.05