Finding the Fourth Proportional to 142,978,579.92, 197,074,643.49 and 101,108,639.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,978,579.92 : 197,074,643.49 = 101,108,639.88 : x
2. Step 2: Convert to fraction form
   142,978,579.92/197,074,643.49 = 101,108,639.88/x
3. Step 3: Cross multiply
   142,978,579.92x = 197,074,643.49 × 101,108,639.88
4. Step 4: Simplify right side
   142,978,579.92x = 19,925,949,158,109,796
5. Step 5: Solve for x
   x = 19,925,949,158,109,796/142,978,579.92
6. Step 6: Final answer
   x = 139,363,177.12