Finding the Fourth Proportional to 74,530.17, 102,851.55 and 42,699.20

Step by Step Solution

1. Step 1: Write the proportion equation
   74,530.17 : 102,851.55 = 42,699.20 : x
2. Step 2: Convert to fraction form
   74,530.17/102,851.55 = 42,699.20/x
3. Step 3: Cross multiply
   74,530.17x = 102,851.55 × 42,699.20
4. Step 4: Simplify right side
   74,530.17x = 4,391,678,389.50
5. Step 5: Solve for x
   x = 4,391,678,389.50/74,530.17
6. Step 6: Final answer
   x = 58,924.84