Finding the Fourth Proportional to 74,161, 102,346.50 and 42,339.88

Step by Step Solution

1. Step 1: Write the proportion equation
   74,161 : 102,346.50 = 42,339.88 : x
2. Step 2: Convert to fraction form
   74,161/102,346.50 = 42,339.88/x
3. Step 3: Cross multiply
   74,161x = 102,346.50 × 42,339.88
4. Step 4: Simplify right side
   74,161x = 4,333,338,528.42
5. Step 5: Solve for x
   x = 4,333,338,528.42/74,161
6. Step 6: Final answer
   x = 58,431.50