Finding the Fourth Proportional to 145,322.68, 218,025.71 and 61,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,322.68 : 218,025.71 = 61,039.50 : x
2. Step 2: Convert to fraction form
   145,322.68/218,025.71 = 61,039.50/x
3. Step 3: Cross multiply
   145,322.68x = 218,025.71 × 61,039.50
4. Step 4: Simplify right side
   145,322.68x = 13,308,178,930.22
5. Step 5: Solve for x
   x = 13,308,178,930.22/145,322.68
6. Step 6: Final answer
   x = 91,576.75