Finding the Fourth Proportional to 94,428.72, 141,513.48 and 91,590.48

Step by Step Solution

1. Step 1: Write the proportion equation
   94,428.72 : 141,513.48 = 91,590.48 : x
2. Step 2: Convert to fraction form
   94,428.72/141,513.48 = 91,590.48/x
3. Step 3: Cross multiply
   94,428.72x = 141,513.48 × 91,590.48
4. Step 4: Simplify right side
   94,428.72x = 12,961,287,559.67
5. Step 5: Solve for x
   x = 12,961,287,559.67/94,428.72
6. Step 6: Final answer
   x = 137,260.02