Finding the Fourth Proportional to 139,006.53, 191,817.72 and 78,582.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,006.53 : 191,817.72 = 78,582.96 : x
2. Step 2: Convert to fraction form
   139,006.53/191,817.72 = 78,582.96/x
3. Step 3: Cross multiply
   139,006.53x = 191,817.72 × 78,582.96
4. Step 4: Simplify right side
   139,006.53x = 15,073,604,218.05
5. Step 5: Solve for x
   x = 15,073,604,218.05/139,006.53
6. Step 6: Final answer
   x = 108,438.10