Finding the Fourth Proportional to 72,357.77, 99,810.15 and 47,828.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,357.77 : 99,810.15 = 47,828.72 : x
2. Step 2: Convert to fraction form
   72,357.77/99,810.15 = 47,828.72/x
3. Step 3: Cross multiply
   72,357.77x = 99,810.15 × 47,828.72
4. Step 4: Simplify right side
   72,357.77x = 4,773,791,717.51
5. Step 5: Solve for x
   x = 4,773,791,717.51/72,357.77
6. Step 6: Final answer
   x = 65,974.83