Finding the Fourth Proportional to 113,315.27, 156,387.93 and 64,921.82

Step by Step Solution

1. Step 1: Write the proportion equation
   113,315.27 : 156,387.93 = 64,921.82 : x
2. Step 2: Convert to fraction form
   113,315.27/156,387.93 = 64,921.82/x
3. Step 3: Cross multiply
   113,315.27x = 156,387.93 × 64,921.82
4. Step 4: Simplify right side
   113,315.27x = 10,152,989,041.63
5. Step 5: Solve for x
   x = 10,152,989,041.63/113,315.27
6. Step 6: Final answer
   x = 89,599.48