Finding the Fourth Proportional to 91,622.22, 137,303.73 and 38,978.70

Step by Step Solution

1. Step 1: Write the proportion equation
   91,622.22 : 137,303.73 = 38,978.70 : x
2. Step 2: Convert to fraction form
   91,622.22/137,303.73 = 38,978.70/x
3. Step 3: Cross multiply
   91,622.22x = 137,303.73 × 38,978.70
4. Step 4: Simplify right side
   91,622.22x = 5,351,920,900.55
5. Step 5: Solve for x
   x = 5,351,920,900.55/91,622.22
6. Step 6: Final answer
   x = 58,412.91