Finding the Fourth Proportional to 139,066.08, 191,911.30 and 75,404.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,066.08 : 191,911.30 = 75,404.12 : x
2. Step 2: Convert to fraction form
   139,066.08/191,911.30 = 75,404.12/x
3. Step 3: Cross multiply
   139,066.08x = 191,911.30 × 75,404.12
4. Step 4: Simplify right side
   139,066.08x = 14,470,902,694.56
5. Step 5: Solve for x
   x = 14,470,902,694.56/139,066.08
6. Step 6: Final answer
   x = 104,057.75