Finding the Fourth Proportional to 126,354.67, 189,468.62 and 42,085.21

Step by Step Solution

1. Step 1: Write the proportion equation
   126,354.67 : 189,468.62 = 42,085.21 : x
2. Step 2: Convert to fraction form
   126,354.67/189,468.62 = 42,085.21/x
3. Step 3: Cross multiply
   126,354.67x = 189,468.62 × 42,085.21
4. Step 4: Simplify right side
   126,354.67x = 7,973,826,134.83
5. Step 5: Solve for x
   x = 7,973,826,134.83/126,354.67
6. Step 6: Final answer
   x = 63,106.70