Finding the Fourth Proportional to 142,784.48, 197,043.74 and 79,123.34

Step by Step Solution

1. Step 1: Write the proportion equation
   142,784.48 : 197,043.74 = 79,123.34 : x
2. Step 2: Convert to fraction form
   142,784.48/197,043.74 = 79,123.34/x
3. Step 3: Cross multiply
   142,784.48x = 197,043.74 × 79,123.34
4. Step 4: Simplify right side
   142,784.48x = 15,590,758,834.89
5. Step 5: Solve for x
   x = 15,590,758,834.89/142,784.48
6. Step 6: Final answer
   x = 109,190.85