Finding the Fourth Proportional to 92,871.51, 139,330.82 and 42,987.52

Step by Step Solution

1. Step 1: Write the proportion equation
   92,871.51 : 139,330.82 = 42,987.52 : x
2. Step 2: Convert to fraction form
   92,871.51/139,330.82 = 42,987.52/x
3. Step 3: Cross multiply
   92,871.51x = 139,330.82 × 42,987.52
4. Step 4: Simplify right side
   92,871.51x = 5,989,486,411.37
5. Step 5: Solve for x
   x = 5,989,486,411.37/92,871.51
6. Step 6: Final answer
   x = 64,492.18