Finding the Fourth Proportional to 76,802.30, 105,974.33 and 42,803.34

Step by Step Solution

1. Step 1: Write the proportion equation
   76,802.30 : 105,974.33 = 42,803.34 : x
2. Step 2: Convert to fraction form
   76,802.30/105,974.33 = 42,803.34/x
3. Step 3: Cross multiply
   76,802.30x = 105,974.33 × 42,803.34
4. Step 4: Simplify right side
   76,802.30x = 4,536,055,278.26
5. Step 5: Solve for x
   x = 4,536,055,278.26/76,802.30
6. Step 6: Final answer
   x = 59,061.45