Finding the Fourth Proportional to 72,077.86, 99,441.09 and 45,210.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,077.86 : 99,441.09 = 45,210.56 : x
2. Step 2: Convert to fraction form
   72,077.86/99,441.09 = 45,210.56/x
3. Step 3: Cross multiply
   72,077.86x = 99,441.09 × 45,210.56
4. Step 4: Simplify right side
   72,077.86x = 4,495,787,614.51
5. Step 5: Solve for x
   x = 4,495,787,614.51/72,077.86
6. Step 6: Final answer
   x = 62,374.05