Finding the Fourth Proportional to 139,051.82, 191,892.84 and 75,389.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,051.82 : 191,892.84 = 75,389.78 : x
2. Step 2: Convert to fraction form
   139,051.82/191,892.84 = 75,389.78/x
3. Step 3: Cross multiply
   139,051.82x = 191,892.84 × 75,389.78
4. Step 4: Simplify right side
   139,051.82x = 14,466,758,991.18
5. Step 5: Solve for x
   x = 14,466,758,991.18/139,051.82
6. Step 6: Final answer
   x = 104,038.62