Finding the Fourth Proportional to 142,030.72, 212,740.48 and 67,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,030.72 : 212,740.48 = 67,038.72 : x
2. Step 2: Convert to fraction form
   142,030.72/212,740.48 = 67,038.72/x
3. Step 3: Cross multiply
   142,030.72x = 212,740.48 × 67,038.72
4. Step 4: Simplify right side
   142,030.72x = 14,261,849,471.39
5. Step 5: Solve for x
   x = 14,261,849,471.39/142,030.72
6. Step 6: Final answer
   x = 100,413.84