Finding the Fourth Proportional to 62,978.74, 86,918.61 and 36,120.67

Step by Step Solution

1. Step 1: Write the proportion equation
   62,978.74 : 86,918.61 = 36,120.67 : x
2. Step 2: Convert to fraction form
   62,978.74/86,918.61 = 36,120.67/x
3. Step 3: Cross multiply
   62,978.74x = 86,918.61 × 36,120.67
4. Step 4: Simplify right side
   62,978.74x = 3,139,558,428.67
5. Step 5: Solve for x
   x = 3,139,558,428.67/62,978.74
6. Step 6: Final answer
   x = 49,851.08