Finding the Fourth Proportional to 142,579.68, 213,809.28 and 42,754.08

Step by Step Solution

1. Step 1: Write the proportion equation
   142,579.68 : 213,809.28 = 42,754.08 : x
2. Step 2: Convert to fraction form
   142,579.68/213,809.28 = 42,754.08/x
3. Step 3: Cross multiply
   142,579.68x = 213,809.28 × 42,754.08
4. Step 4: Simplify right side
   142,579.68x = 9,141,219,061.86
5. Step 5: Solve for x
   x = 9,141,219,061.86/142,579.68
6. Step 6: Final answer
   x = 64,113.06