Finding the Fourth Proportional to 42,736.98, 58,985.18 and 28,175.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,736.98 : 58,985.18 = 28,175.61 : x
2. Step 2: Convert to fraction form
   42,736.98/58,985.18 = 28,175.61/x
3. Step 3: Cross multiply
   42,736.98x = 58,985.18 × 28,175.61
4. Step 4: Simplify right side
   42,736.98x = 1,661,943,427.46
5. Step 5: Solve for x
   x = 1,661,943,427.46/42,736.98
6. Step 6: Final answer
   x = 38,887.71