Finding the Fourth Proportional to 92,698.76, 139,089.48 and 42,752

Step by Step Solution

1. Step 1: Write the proportion equation
   92,698.76 : 139,089.48 = 42,752 : x
2. Step 2: Convert to fraction form
   92,698.76/139,089.48 = 42,752/x
3. Step 3: Cross multiply
   92,698.76x = 139,089.48 × 42,752
4. Step 4: Simplify right side
   92,698.76x = 5,946,353,448.96
5. Step 5: Solve for x
   x = 5,946,353,448.96/92,698.76
6. Step 6: Final answer
   x = 64,147.07