Finding the Fourth Proportional to 116,407, 160,641.66 and 63,415

Step by Step Solution

1. Step 1: Write the proportion equation
   116,407 : 160,641.66 = 63,415 : x
2. Step 2: Convert to fraction form
   116,407/160,641.66 = 63,415/x
3. Step 3: Cross multiply
   116,407x = 160,641.66 × 63,415
4. Step 4: Simplify right side
   116,407x = 10,187,090,868.90
5. Step 5: Solve for x
   x = 10,187,090,868.90/116,407
6. Step 6: Final answer
   x = 87,512.70