Finding the Fourth Proportional to 103,185.56, 142,335.74 and 64,884.48

Step by Step Solution

1. Step 1: Write the proportion equation
   103,185.56 : 142,335.74 = 64,884.48 : x
2. Step 2: Convert to fraction form
   103,185.56/142,335.74 = 64,884.48/x
3. Step 3: Cross multiply
   103,185.56x = 142,335.74 × 64,884.48
4. Step 4: Simplify right side
   103,185.56x = 9,235,380,475.32
5. Step 5: Solve for x
   x = 9,235,380,475.32/103,185.56
6. Step 6: Final answer
   x = 89,502.64