Finding the Fourth Proportional to 139,021, 191,847.90 and 75,357.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,021 : 191,847.90 = 75,357.16 : x
2. Step 2: Convert to fraction form
   139,021/191,847.90 = 75,357.16/x
3. Step 3: Cross multiply
   139,021x = 191,847.90 × 75,357.16
4. Step 4: Simplify right side
   139,021x = 14,457,112,895.96
5. Step 5: Solve for x
   x = 14,457,112,895.96/139,021
6. Step 6: Final answer
   x = 103,992.30