Finding the Fourth Proportional to 139,997.19, 193,191.96 and 79,574.43

Step by Step Solution

1. Step 1: Write the proportion equation
   139,997.19 : 193,191.96 = 79,574.43 : x
2. Step 2: Convert to fraction form
   139,997.19/193,191.96 = 79,574.43/x
3. Step 3: Cross multiply
   139,997.19x = 193,191.96 × 79,574.43
4. Step 4: Simplify right side
   139,997.19x = 15,373,140,097.58
5. Step 5: Solve for x
   x = 15,373,140,097.58/139,997.19
6. Step 6: Final answer
   x = 109,810.35