Finding the Fourth Proportional to 139,110, 191,971.80 and 79,494

Step by Step Solution

1. Step 1: Write the proportion equation
   139,110 : 191,971.80 = 79,494 : x
2. Step 2: Convert to fraction form
   139,110/191,971.80 = 79,494/x
3. Step 3: Cross multiply
   139,110x = 191,971.80 × 79,494
4. Step 4: Simplify right side
   139,110x = 15,260,606,269.20
5. Step 5: Solve for x
   x = 15,260,606,269.20/139,110
6. Step 6: Final answer
   x = 109,701.72