Finding the Fourth Proportional to 105,570.18, 158,353.86 and 42,389.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,570.18 : 158,353.86 = 42,389.16 : x
2. Step 2: Convert to fraction form
   105,570.18/158,353.86 = 42,389.16/x
3. Step 3: Cross multiply
   105,570.18x = 158,353.86 × 42,389.16
4. Step 4: Simplify right side
   105,570.18x = 6,712,486,673.29
5. Step 5: Solve for x
   x = 6,712,486,673.29/105,570.18
6. Step 6: Final answer
   x = 63,583.17