Finding the Fourth Proportional to 103,419.12, 142,714.56 and 63,200.16

Step by Step Solution

1. Step 1: Write the proportion equation
   103,419.12 : 142,714.56 = 63,200.16 : x
2. Step 2: Convert to fraction form
   103,419.12/142,714.56 = 63,200.16/x
3. Step 3: Cross multiply
   103,419.12x = 142,714.56 × 63,200.16
4. Step 4: Simplify right side
   103,419.12x = 9,019,583,026.33
5. Step 5: Solve for x
   x = 9,019,583,026.33/103,419.12
6. Step 6: Final answer
   x = 87,213.88