Finding the Fourth Proportional to 45,085.98, 62,220.42 and 28,100.28

Step by Step Solution

1. Step 1: Write the proportion equation
   45,085.98 : 62,220.42 = 28,100.28 : x
2. Step 2: Convert to fraction form
   45,085.98/62,220.42 = 28,100.28/x
3. Step 3: Cross multiply
   45,085.98x = 62,220.42 × 28,100.28
4. Step 4: Simplify right side
   45,085.98x = 1,748,411,223.72
5. Step 5: Solve for x
   x = 1,748,411,223.72/45,085.98
6. Step 6: Final answer
   x = 38,779.49