Finding the Fourth Proportional to 78,710.02, 108,619.91 and 42,900.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,710.02 : 108,619.91 = 42,900.06 : x
2. Step 2: Convert to fraction form
   78,710.02/108,619.91 = 42,900.06/x
3. Step 3: Cross multiply
   78,710.02x = 108,619.91 × 42,900.06
4. Step 4: Simplify right side
   78,710.02x = 4,659,800,656.19
5. Step 5: Solve for x
   x = 4,659,800,656.19/78,710.02
6. Step 6: Final answer
   x = 59,202.13