Finding the Fourth Proportional to 142,423.76, 213,569.86 and 52,443.87

Step by Step Solution

1. Step 1: Write the proportion equation
   142,423.76 : 213,569.86 = 52,443.87 : x
2. Step 2: Convert to fraction form
   142,423.76/213,569.86 = 52,443.87/x
3. Step 3: Cross multiply
   142,423.76x = 213,569.86 × 52,443.87
4. Step 4: Simplify right side
   142,423.76x = 11,200,429,973.76
5. Step 5: Solve for x
   x = 11,200,429,973.76/142,423.76
6. Step 6: Final answer
   x = 78,641.58