Finding the Fourth Proportional to 74,171.52, 102,365.28 and 42,345

Step by Step Solution

1. Step 1: Write the proportion equation
   74,171.52 : 102,365.28 = 42,345 : x
2. Step 2: Convert to fraction form
   74,171.52/102,365.28 = 42,345/x
3. Step 3: Cross multiply
   74,171.52x = 102,365.28 × 42,345
4. Step 4: Simplify right side
   74,171.52x = 4,334,657,781.60
5. Step 5: Solve for x
   x = 4,334,657,781.60/74,171.52
6. Step 6: Final answer
   x = 58,441.00