Finding the Fourth Proportional to 139,068.16, 191,912.70 and 75,404.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,068.16 : 191,912.70 = 75,404.86 : x
2. Step 2: Convert to fraction form
   139,068.16/191,912.70 = 75,404.86/x
3. Step 3: Cross multiply
   139,068.16x = 191,912.70 × 75,404.86
4. Step 4: Simplify right side
   139,068.16x = 14,471,150,275.72
5. Step 5: Solve for x
   x = 14,471,150,275.72/139,068.16
6. Step 6: Final answer
   x = 104,057.97