Finding the Fourth Proportional to 142,714,648.10, 214,071,972.15 and 99,667,927.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,714,648.10 : 214,071,972.15 = 99,667,927.10 : x
2. Step 2: Convert to fraction form
   142,714,648.10/214,071,972.15 = 99,667,927.10/x
3. Step 3: Cross multiply
   142,714,648.10x = 214,071,972.15 × 99,667,927.10
4. Step 4: Simplify right side
   142,714,648.10x = 21,336,109,714,399,428
5. Step 5: Solve for x
   x = 21,336,109,714,399,428/142,714,648.10
6. Step 6: Final answer
   x = 149,501,890.65