Finding the Fourth Proportional to 142,050.18, 213,109.95 and 47,280.18

Step by Step Solution

1. Step 1: Write the proportion equation
   142,050.18 : 213,109.95 = 47,280.18 : x
2. Step 2: Convert to fraction form
   142,050.18/213,109.95 = 47,280.18/x
3. Step 3: Cross multiply
   142,050.18x = 213,109.95 × 47,280.18
4. Step 4: Simplify right side
   142,050.18x = 10,075,876,795.79
5. Step 5: Solve for x
   x = 10,075,876,795.79/142,050.18
6. Step 6: Final answer
   x = 70,931.81