Finding the Fourth Proportional to 103,543.77, 142,820.15 and 67,180.25

Step by Step Solution

1. Step 1: Write the proportion equation
   103,543.77 : 142,820.15 = 67,180.25 : x
2. Step 2: Convert to fraction form
   103,543.77/142,820.15 = 67,180.25/x
3. Step 3: Cross multiply
   103,543.77x = 142,820.15 × 67,180.25
4. Step 4: Simplify right side
   103,543.77x = 9,594,692,835.89
5. Step 5: Solve for x
   x = 9,594,692,835.89/103,543.77
6. Step 6: Final answer
   x = 92,663.16