Finding the Fourth Proportional to 126,322.72, 189,507.77 and 42,087.98

Step by Step Solution

1. Step 1: Write the proportion equation
   126,322.72 : 189,507.77 = 42,087.98 : x
2. Step 2: Convert to fraction form
   126,322.72/189,507.77 = 42,087.98/x
3. Step 3: Cross multiply
   126,322.72x = 189,507.77 × 42,087.98
4. Step 4: Simplify right side
   126,322.72x = 7,975,999,654.76
5. Step 5: Solve for x
   x = 7,975,999,654.76/126,322.72
6. Step 6: Final answer
   x = 63,139.87