Finding the Fourth Proportional to 103,210.72, 142,461.03 and 67,406.29

Step by Step Solution

1. Step 1: Write the proportion equation
   103,210.72 : 142,461.03 = 67,406.29 : x
2. Step 2: Convert to fraction form
   103,210.72/142,461.03 = 67,406.29/x
3. Step 3: Cross multiply
   103,210.72x = 142,461.03 × 67,406.29
4. Step 4: Simplify right side
   103,210.72x = 9,602,769,501.88
5. Step 5: Solve for x
   x = 9,602,769,501.88/103,210.72
6. Step 6: Final answer
   x = 93,040.43