Finding the Fourth Proportional to 99,002.99, 136,623.98 and 53,680.89

Step by Step Solution

1. Step 1: Write the proportion equation
   99,002.99 : 136,623.98 = 53,680.89 : x
2. Step 2: Convert to fraction form
   99,002.99/136,623.98 = 53,680.89/x
3. Step 3: Cross multiply
   99,002.99x = 136,623.98 × 53,680.89
4. Step 4: Simplify right side
   99,002.99x = 7,334,096,975.94
5. Step 5: Solve for x
   x = 7,334,096,975.94/99,002.99
6. Step 6: Final answer
   x = 74,079.55