Finding the Fourth Proportional to 78,707.65, 108,618.93 and 42,899.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,707.65 : 108,618.93 = 42,899.98 : x
2. Step 2: Convert to fraction form
   78,707.65/108,618.93 = 42,899.98/x
3. Step 3: Cross multiply
   78,707.65x = 108,618.93 × 42,899.98
4. Step 4: Simplify right side
   78,707.65x = 4,659,749,817.37
5. Step 5: Solve for x
   x = 4,659,749,817.37/78,707.65
6. Step 6: Final answer
   x = 59,203.26