Finding the Fourth Proportional to 51,186.34, 70,595.38 and 42,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   51,186.34 : 70,595.38 = 42,978.25 : x
2. Step 2: Convert to fraction form
   51,186.34/70,595.38 = 42,978.25/x
3. Step 3: Cross multiply
   51,186.34x = 70,595.38 × 42,978.25
4. Step 4: Simplify right side
   51,186.34x = 3,034,065,890.49
5. Step 5: Solve for x
   x = 3,034,065,890.49/51,186.34
6. Step 6: Final answer
   x = 59,274.91