Finding the Fourth Proportional to 142,370.73, 196,461.72 and 78,703.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,370.73 : 196,461.72 = 78,703.50 : x
2. Step 2: Convert to fraction form
   142,370.73/196,461.72 = 78,703.50/x
3. Step 3: Cross multiply
   142,370.73x = 196,461.72 × 78,703.50
4. Step 4: Simplify right side
   142,370.73x = 15,462,224,980.02
5. Step 5: Solve for x
   x = 15,462,224,980.02/142,370.73
6. Step 6: Final answer
   x = 108,605.36