Finding the Fourth Proportional to 74,221.52, 102,434.28 and 42,395

Step by Step Solution

1. Step 1: Write the proportion equation
   74,221.52 : 102,434.28 = 42,395 : x
2. Step 2: Convert to fraction form
   74,221.52/102,434.28 = 42,395/x
3. Step 3: Cross multiply
   74,221.52x = 102,434.28 × 42,395
4. Step 4: Simplify right side
   74,221.52x = 4,342,701,300.60
5. Step 5: Solve for x
   x = 4,342,701,300.60/74,221.52
6. Step 6: Final answer
   x = 58,510.00