Finding the Fourth Proportional to 92,921.10, 139,364.58 and 42,308.13

Step by Step Solution

1. Step 1: Write the proportion equation
   92,921.10 : 139,364.58 = 42,308.13 : x
2. Step 2: Convert to fraction form
   92,921.10/139,364.58 = 42,308.13/x
3. Step 3: Cross multiply
   92,921.10x = 139,364.58 × 42,308.13
4. Step 4: Simplify right side
   92,921.10x = 5,896,254,768.04
5. Step 5: Solve for x
   x = 5,896,254,768.04/92,921.10
6. Step 6: Final answer
   x = 63,454.42