Finding the Fourth Proportional to 139,111.61, 191,974.37 and 75,449.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,111.61 : 191,974.37 = 75,449.42 : x
2. Step 2: Convert to fraction form
   139,111.61/191,974.37 = 75,449.42/x
3. Step 3: Cross multiply
   139,111.61x = 191,974.37 × 75,449.42
4. Step 4: Simplify right side
   139,111.61x = 14,484,353,534.25
5. Step 5: Solve for x
   x = 14,484,353,534.25/139,111.61
6. Step 6: Final answer
   x = 104,120.38