Finding the Fourth Proportional to 76,790.55, 105,979.55 and 42,802.14

Step by Step Solution

1. Step 1: Write the proportion equation
   76,790.55 : 105,979.55 = 42,802.14 : x
2. Step 2: Convert to fraction form
   76,790.55/105,979.55 = 42,802.14/x
3. Step 3: Cross multiply
   76,790.55x = 105,979.55 × 42,802.14
4. Step 4: Simplify right side
   76,790.55x = 4,536,151,322.23
5. Step 5: Solve for x
   x = 4,536,151,322.23/76,790.55
6. Step 6: Final answer
   x = 59,071.74