Finding the Fourth Proportional to 98,900.51, 147,807.78 and 72,302.49

Step by Step Solution

1. Step 1: Write the proportion equation
   98,900.51 : 147,807.78 = 72,302.49 : x
2. Step 2: Convert to fraction form
   98,900.51/147,807.78 = 72,302.49/x
3. Step 3: Cross multiply
   98,900.51x = 147,807.78 × 72,302.49
4. Step 4: Simplify right side
   98,900.51x = 10,686,870,535.37
5. Step 5: Solve for x
   x = 10,686,870,535.37/98,900.51
6. Step 6: Final answer
   x = 108,056.78