Finding the Fourth Proportional to 72,876.51, 100,569.79 and 42,255.54

Step by Step Solution

1. Step 1: Write the proportion equation
   72,876.51 : 100,569.79 = 42,255.54 : x
2. Step 2: Convert to fraction form
   72,876.51/100,569.79 = 42,255.54/x
3. Step 3: Cross multiply
   72,876.51x = 100,569.79 × 42,255.54
4. Step 4: Simplify right side
   72,876.51x = 4,249,630,784.14
5. Step 5: Solve for x
   x = 4,249,630,784.14/72,876.51
6. Step 6: Final answer
   x = 58,312.76