Finding the Fourth Proportional to 71,434.86, 98,511.72 and 42,749.64

Step by Step Solution

1. Step 1: Write the proportion equation
   71,434.86 : 98,511.72 = 42,749.64 : x
2. Step 2: Convert to fraction form
   71,434.86/98,511.72 = 42,749.64/x
3. Step 3: Cross multiply
   71,434.86x = 98,511.72 × 42,749.64
4. Step 4: Simplify right side
   71,434.86x = 4,211,340,565.78
5. Step 5: Solve for x
   x = 4,211,340,565.78/71,434.86
6. Step 6: Final answer
   x = 58,953.58