Finding the Fourth Proportional to 57,053.32, 78,685.78 and 42,746.76

Step by Step Solution

1. Step 1: Write the proportion equation
   57,053.32 : 78,685.78 = 42,746.76 : x
2. Step 2: Convert to fraction form
   57,053.32/78,685.78 = 42,746.76/x
3. Step 3: Cross multiply
   57,053.32x = 78,685.78 × 42,746.76
4. Step 4: Simplify right side
   57,053.32x = 3,363,562,153.07
5. Step 5: Solve for x
   x = 3,363,562,153.07/57,053.32
6. Step 6: Final answer
   x = 58,954.71