Finding the Fourth Proportional to 78,111, 117,396.27 and 64,869.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,111 : 117,396.27 = 64,869.12 : x
2. Step 2: Convert to fraction form
   78,111/117,396.27 = 64,869.12/x
3. Step 3: Cross multiply
   78,111x = 117,396.27 × 64,869.12
4. Step 4: Simplify right side
   78,111x = 7,615,392,726.18
5. Step 5: Solve for x
   x = 7,615,392,726.18/78,111
6. Step 6: Final answer
   x = 97,494.50