Finding the Fourth Proportional to 102,196.62, 140,885.17 and 71,887.86

Step by Step Solution

1. Step 1: Write the proportion equation
   102,196.62 : 140,885.17 = 71,887.86 : x
2. Step 2: Convert to fraction form
   102,196.62/140,885.17 = 71,887.86/x
3. Step 3: Cross multiply
   102,196.62x = 140,885.17 × 71,887.86
4. Step 4: Simplify right side
   102,196.62x = 10,127,933,197.32
5. Step 5: Solve for x
   x = 10,127,933,197.32/102,196.62
6. Step 6: Final answer
   x = 99,102.43