Finding the Fourth Proportional to 77,729.30, 107,256.89 and 49,038.14

Step by Step Solution

1. Step 1: Write the proportion equation
   77,729.30 : 107,256.89 = 49,038.14 : x
2. Step 2: Convert to fraction form
   77,729.30/107,256.89 = 49,038.14/x
3. Step 3: Cross multiply
   77,729.30x = 107,256.89 × 49,038.14
4. Step 4: Simplify right side
   77,729.30x = 5,259,677,851.50
5. Step 5: Solve for x
   x = 5,259,677,851.50/77,729.30
6. Step 6: Final answer
   x = 67,666.61