Finding the Fourth Proportional to 91,821.60, 137,667.60 and 41,925.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,821.60 : 137,667.60 = 41,925.60 : x
2. Step 2: Convert to fraction form
   91,821.60/137,667.60 = 41,925.60/x
3. Step 3: Cross multiply
   91,821.60x = 137,667.60 × 41,925.60
4. Step 4: Simplify right side
   91,821.60x = 5,771,796,730.56
5. Step 5: Solve for x
   x = 5,771,796,730.56/91,821.60
6. Step 6: Final answer
   x = 62,858.81