Finding the Fourth Proportional to 82,098.50, 123,109.47 and 42,645.02

Step by Step Solution

1. Step 1: Write the proportion equation
   82,098.50 : 123,109.47 = 42,645.02 : x
2. Step 2: Convert to fraction form
   82,098.50/123,109.47 = 42,645.02/x
3. Step 3: Cross multiply
   82,098.50x = 123,109.47 × 42,645.02
4. Step 4: Simplify right side
   82,098.50x = 5,250,005,194.79
5. Step 5: Solve for x
   x = 5,250,005,194.79/82,098.50
6. Step 6: Final answer
   x = 63,947.64