Finding the Fourth Proportional to 139,002.75, 191,822.72 and 75,338.91

Step by Step Solution

1. Step 1: Write the proportion equation
   139,002.75 : 191,822.72 = 75,338.91 : x
2. Step 2: Convert to fraction form
   139,002.75/191,822.72 = 75,338.91/x
3. Step 3: Cross multiply
   139,002.75x = 191,822.72 × 75,338.91
4. Step 4: Simplify right side
   139,002.75x = 14,451,714,261.34
5. Step 5: Solve for x
   x = 14,451,714,261.34/139,002.75
6. Step 6: Final answer
   x = 103,967.11