Finding the Fourth Proportional to 142,124.51, 196,130.56 and 78,460.94

Step by Step Solution

1. Step 1: Write the proportion equation
   142,124.51 : 196,130.56 = 78,460.94 : x
2. Step 2: Convert to fraction form
   142,124.51/196,130.56 = 78,460.94/x
3. Step 3: Cross multiply
   142,124.51x = 196,130.56 × 78,460.94
4. Step 4: Simplify right side
   142,124.51x = 15,388,588,100.33
5. Step 5: Solve for x
   x = 15,388,588,100.33/142,124.51
6. Step 6: Final answer
   x = 108,275.40