Finding the Fourth Proportional to 74,109.30, 102,261.20 and 42,276.30

Step by Step Solution

1. Step 1: Write the proportion equation
   74,109.30 : 102,261.20 = 42,276.30 : x
2. Step 2: Convert to fraction form
   74,109.30/102,261.20 = 42,276.30/x
3. Step 3: Cross multiply
   74,109.30x = 102,261.20 × 42,276.30
4. Step 4: Simplify right side
   74,109.30x = 4,323,225,169.56
5. Step 5: Solve for x
   x = 4,323,225,169.56/74,109.30
6. Step 6: Final answer
   x = 58,335.80