Finding the Fourth Proportional to 116,407.96, 174,663.78 and 60,991

Step by Step Solution

1. Step 1: Write the proportion equation
   116,407.96 : 174,663.78 = 60,991 : x
2. Step 2: Convert to fraction form
   116,407.96/174,663.78 = 60,991/x
3. Step 3: Cross multiply
   116,407.96x = 174,663.78 × 60,991
4. Step 4: Simplify right side
   116,407.96x = 10,652,918,605.98
5. Step 5: Solve for x
   x = 10,652,918,605.98/116,407.96
6. Step 6: Final answer
   x = 91,513.66