Finding the Fourth Proportional to 103,612.53, 142,980.06 and 61,162.86

Step by Step Solution

1. Step 1: Write the proportion equation
   103,612.53 : 142,980.06 = 61,162.86 : x
2. Step 2: Convert to fraction form
   103,612.53/142,980.06 = 61,162.86/x
3. Step 3: Cross multiply
   103,612.53x = 142,980.06 × 61,162.86
4. Step 4: Simplify right side
   103,612.53x = 8,745,069,392.57
5. Step 5: Solve for x
   x = 8,745,069,392.57/103,612.53
6. Step 6: Final answer
   x = 84,401.66