Finding the Fourth Proportional to 74,205.78, 102,406.59 and 42,374.10

Step by Step Solution

1. Step 1: Write the proportion equation
   74,205.78 : 102,406.59 = 42,374.10 : x
2. Step 2: Convert to fraction form
   74,205.78/102,406.59 = 42,374.10/x
3. Step 3: Cross multiply
   74,205.78x = 102,406.59 × 42,374.10
4. Step 4: Simplify right side
   74,205.78x = 4,339,387,085.32
5. Step 5: Solve for x
   x = 4,339,387,085.32/74,205.78
6. Step 6: Final answer
   x = 58,477.75