Finding the Fourth Proportional to 56,761.38, 78,318.72 and 32,886.60

Step by Step Solution

1. Step 1: Write the proportion equation
   56,761.38 : 78,318.72 = 32,886.60 : x
2. Step 2: Convert to fraction form
   56,761.38/78,318.72 = 32,886.60/x
3. Step 3: Cross multiply
   56,761.38x = 78,318.72 × 32,886.60
4. Step 4: Simplify right side
   56,761.38x = 2,575,636,417.15
5. Step 5: Solve for x
   x = 2,575,636,417.15/56,761.38
6. Step 6: Final answer
   x = 45,376.56