Finding the Fourth Proportional to 190,782.83, 286,214.72 and 72,451.55

Step by Step Solution

1. Step 1: Write the proportion equation
   190,782.83 : 286,214.72 = 72,451.55 : x
2. Step 2: Convert to fraction form
   190,782.83/286,214.72 = 72,451.55/x
3. Step 3: Cross multiply
   190,782.83x = 286,214.72 × 72,451.55
4. Step 4: Simplify right side
   190,782.83x = 20,736,700,096.82
5. Step 5: Solve for x
   x = 20,736,700,096.82/190,782.83
6. Step 6: Final answer
   x = 108,692.70