Finding the Fourth Proportional to 142,083.59, 196,061.40 and 78,417.29

Step by Step Solution

1. Step 1: Write the proportion equation
   142,083.59 : 196,061.40 = 78,417.29 : x
2. Step 2: Convert to fraction form
   142,083.59/196,061.40 = 78,417.29/x
3. Step 3: Cross multiply
   142,083.59x = 196,061.40 × 78,417.29
4. Step 4: Simplify right side
   142,083.59x = 15,374,602,779.37
5. Step 5: Solve for x
   x = 15,374,602,779.37/142,083.59
6. Step 6: Final answer
   x = 108,208.15