Finding the Fourth Proportional to 76,478.02, 105,541.05 and 42,945.22

Step by Step Solution

1. Step 1: Write the proportion equation
   76,478.02 : 105,541.05 = 42,945.22 : x
2. Step 2: Convert to fraction form
   76,478.02/105,541.05 = 42,945.22/x
3. Step 3: Cross multiply
   76,478.02x = 105,541.05 × 42,945.22
4. Step 4: Simplify right side
   76,478.02x = 4,532,483,611.28
5. Step 5: Solve for x
   x = 4,532,483,611.28/76,478.02
6. Step 6: Final answer
   x = 59,265.18