Finding the Fourth Proportional to 61,068.34, 91,615.56 and 18,947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,068.34 : 91,615.56 = 18,947.50 : x
2. Step 2: Convert to fraction form
   61,068.34/91,615.56 = 18,947.50/x
3. Step 3: Cross multiply
   61,068.34x = 91,615.56 × 18,947.50
4. Step 4: Simplify right side
   61,068.34x = 1,735,885,823.10
5. Step 5: Solve for x
   x = 1,735,885,823.10/61,068.34
6. Step 6: Final answer
   x = 28,425.30