Finding the Fourth Proportional to 61,408.53, 92,081.61 and 28,100.07

Step by Step Solution

1. Step 1: Write the proportion equation
   61,408.53 : 92,081.61 = 28,100.07 : x
2. Step 2: Convert to fraction form
   61,408.53/92,081.61 = 28,100.07/x
3. Step 3: Cross multiply
   61,408.53x = 92,081.61 × 28,100.07
4. Step 4: Simplify right side
   61,408.53x = 2,587,499,686.71
5. Step 5: Solve for x
   x = 2,587,499,686.71/61,408.53
6. Step 6: Final answer
   x = 42,135.83