Finding the Fourth Proportional to 51,002.55, 70,226.06 and 42,400.35

Step by Step Solution

1. Step 1: Write the proportion equation
   51,002.55 : 70,226.06 = 42,400.35 : x
2. Step 2: Convert to fraction form
   51,002.55/70,226.06 = 42,400.35/x
3. Step 3: Cross multiply
   51,002.55x = 70,226.06 × 42,400.35
4. Step 4: Simplify right side
   51,002.55x = 2,977,609,311.12
5. Step 5: Solve for x
   x = 2,977,609,311.12/51,002.55
6. Step 6: Final answer
   x = 58,381.58