Finding the Fourth Proportional to 78,656.77, 108,548.01 and 42,846.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,656.77 : 108,548.01 = 42,846.70 : x
2. Step 2: Convert to fraction form
   78,656.77/108,548.01 = 42,846.70/x
3. Step 3: Cross multiply
   78,656.77x = 108,548.01 × 42,846.70
4. Step 4: Simplify right side
   78,656.77x = 4,650,924,020.07
5. Step 5: Solve for x
   x = 4,650,924,020.07/78,656.77
6. Step 6: Final answer
   x = 59,129.35