Finding the Fourth Proportional to 107,362.56, 148,174.01 and 64,921.40

Step by Step Solution

1. Step 1: Write the proportion equation
   107,362.56 : 148,174.01 = 64,921.40 : x
2. Step 2: Convert to fraction form
   107,362.56/148,174.01 = 64,921.40/x
3. Step 3: Cross multiply
   107,362.56x = 148,174.01 × 64,921.40
4. Step 4: Simplify right side
   107,362.56x = 9,619,664,172.81
5. Step 5: Solve for x
   x = 9,619,664,172.81/107,362.56
6. Step 6: Final answer
   x = 89,599.80