Finding the Fourth Proportional to 112,991.41, 155,941.98 and 65,244.70

Step by Step Solution

1. Step 1: Write the proportion equation
   112,991.41 : 155,941.98 = 65,244.70 : x
2. Step 2: Convert to fraction form
   112,991.41/155,941.98 = 65,244.70/x
3. Step 3: Cross multiply
   112,991.41x = 155,941.98 × 65,244.70
4. Step 4: Simplify right side
   112,991.41x = 10,174,387,702.51
5. Step 5: Solve for x
   x = 10,174,387,702.51/112,991.41
6. Step 6: Final answer
   x = 90,045.67