Finding the Fourth Proportional to 51,012.63, 70,405.79 and 42,501.26

Step by Step Solution

1. Step 1: Write the proportion equation
   51,012.63 : 70,405.79 = 42,501.26 : x
2. Step 2: Convert to fraction form
   51,012.63/70,405.79 = 42,501.26/x
3. Step 3: Cross multiply
   51,012.63x = 70,405.79 × 42,501.26
4. Step 4: Simplify right side
   51,012.63x = 2,992,334,221.76
5. Step 5: Solve for x
   x = 2,992,334,221.76/51,012.63
6. Step 6: Final answer
   x = 58,658.69