Finding the Fourth Proportional to 76,548.48, 105,628.59 and 42,558.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,548.48 : 105,628.59 = 42,558.42 : x
2. Step 2: Convert to fraction form
   76,548.48/105,628.59 = 42,558.42/x
3. Step 3: Cross multiply
   76,548.48x = 105,628.59 × 42,558.42
4. Step 4: Simplify right side
   76,548.48x = 4,495,385,897.23
5. Step 5: Solve for x
   x = 4,495,385,897.23/76,548.48
6. Step 6: Final answer
   x = 58,726.00