Finding the Fourth Proportional to 139,032.20, 191,865.42 and 75,371

Step by Step Solution

1. Step 1: Write the proportion equation
   139,032.20 : 191,865.42 = 75,371 : x
2. Step 2: Convert to fraction form
   139,032.20/191,865.42 = 75,371/x
3. Step 3: Cross multiply
   139,032.20x = 191,865.42 × 75,371
4. Step 4: Simplify right side
   139,032.20x = 14,461,088,570.82
5. Step 5: Solve for x
   x = 14,461,088,570.82/139,032.20
6. Step 6: Final answer
   x = 104,012.51