Finding the Fourth Proportional to 120,060.72, 180,034.56 and 70,155.23

Step by Step Solution

1. Step 1: Write the proportion equation
   120,060.72 : 180,034.56 = 70,155.23 : x
2. Step 2: Convert to fraction form
   120,060.72/180,034.56 = 70,155.23/x
3. Step 3: Cross multiply
   120,060.72x = 180,034.56 × 70,155.23
4. Step 4: Simplify right side
   120,060.72x = 12,630,365,064.58
5. Step 5: Solve for x
   x = 12,630,365,064.58/120,060.72
6. Step 6: Final answer
   x = 105,199.81