Finding the Fourth Proportional to 69,770.51, 96,172.77 and 63,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   69,770.51 : 96,172.77 = 63,978.52 : x
2. Step 2: Convert to fraction form
   69,770.51/96,172.77 = 63,978.52/x
3. Step 3: Cross multiply
   69,770.51x = 96,172.77 × 63,978.52
4. Step 4: Simplify right side
   69,770.51x = 6,152,991,008.04
5. Step 5: Solve for x
   x = 6,152,991,008.04/69,770.51
6. Step 6: Final answer
   x = 88,188.99