Finding the Fourth Proportional to 78,699.42, 108,602.04 and 42,888.67

Step by Step Solution

1. Step 1: Write the proportion equation
   78,699.42 : 108,602.04 = 42,888.67 : x
2. Step 2: Convert to fraction form
   78,699.42/108,602.04 = 42,888.67/x
3. Step 3: Cross multiply
   78,699.42x = 108,602.04 × 42,888.67
4. Step 4: Simplify right side
   78,699.42x = 4,657,797,054.89
5. Step 5: Solve for x
   x = 4,657,797,054.89/78,699.42
6. Step 6: Final answer
   x = 59,184.64