Finding the Fourth Proportional to 74,613.18, 102,959.91 and 42,774.78

Step by Step Solution

1. Step 1: Write the proportion equation
   74,613.18 : 102,959.91 = 42,774.78 : x
2. Step 2: Convert to fraction form
   74,613.18/102,959.91 = 42,774.78/x
3. Step 3: Cross multiply
   74,613.18x = 102,959.91 × 42,774.78
4. Step 4: Simplify right side
   74,613.18x = 4,404,087,499.07
5. Step 5: Solve for x
   x = 4,404,087,499.07/74,613.18
6. Step 6: Final answer
   x = 59,025.60