Finding the Fourth Proportional to 74,390.57, 102,665.32 and 42,130.82

Step by Step Solution

1. Step 1: Write the proportion equation
   74,390.57 : 102,665.32 = 42,130.82 : x
2. Step 2: Convert to fraction form
   74,390.57/102,665.32 = 42,130.82/x
3. Step 3: Cross multiply
   74,390.57x = 102,665.32 × 42,130.82
4. Step 4: Simplify right side
   74,390.57x = 4,325,374,268.50
5. Step 5: Solve for x
   x = 4,325,374,268.50/74,390.57
6. Step 6: Final answer
   x = 58,144.12