Finding the Fourth Proportional to 76,801.08, 105,972.60 and 42,802.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,801.08 : 105,972.60 = 42,802.10 : x
2. Step 2: Convert to fraction form
   76,801.08/105,972.60 = 42,802.10/x
3. Step 3: Cross multiply
   76,801.08x = 105,972.60 × 42,802.10
4. Step 4: Simplify right side
   76,801.08x = 4,535,849,822.46
5. Step 5: Solve for x
   x = 4,535,849,822.46/76,801.08
6. Step 6: Final answer
   x = 59,059.71