Finding the Fourth Proportional to 76,548.82, 105,640.96 and 42,557.86

Step by Step Solution

1. Step 1: Write the proportion equation
   76,548.82 : 105,640.96 = 42,557.86 : x
2. Step 2: Convert to fraction form
   76,548.82/105,640.96 = 42,557.86/x
3. Step 3: Cross multiply
   76,548.82x = 105,640.96 × 42,557.86
4. Step 4: Simplify right side
   76,548.82x = 4,495,853,185.95
5. Step 5: Solve for x
   x = 4,495,853,185.95/76,548.82
6. Step 6: Final answer
   x = 58,731.85