Finding the Fourth Proportional to 77,648.78, 107,151.72 and 47,484.38

Step by Step Solution

1. Step 1: Write the proportion equation
   77,648.78 : 107,151.72 = 47,484.38 : x
2. Step 2: Convert to fraction form
   77,648.78/107,151.72 = 47,484.38/x
3. Step 3: Cross multiply
   77,648.78x = 107,151.72 × 47,484.38
4. Step 4: Simplify right side
   77,648.78x = 5,088,032,990.13
5. Step 5: Solve for x
   x = 5,088,032,990.13/77,648.78
6. Step 6: Final answer
   x = 65,526.25