Finding the Fourth Proportional to 107,019.72, 147,686.82 and 61,697.50

Step by Step Solution

1. Step 1: Write the proportion equation
   107,019.72 : 147,686.82 = 61,697.50 : x
2. Step 2: Convert to fraction form
   107,019.72/147,686.82 = 61,697.50/x
3. Step 3: Cross multiply
   107,019.72x = 147,686.82 × 61,697.50
4. Step 4: Simplify right side
   107,019.72x = 9,111,907,576.95
5. Step 5: Solve for x
   x = 9,111,907,576.95/107,019.72
6. Step 6: Final answer
   x = 85,142.32