Finding the Fourth Proportional to 99,315.53, 137,056.59 and 53,992.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,315.53 : 137,056.59 = 53,992.52 : x
2. Step 2: Convert to fraction form
   99,315.53/137,056.59 = 53,992.52/x
3. Step 3: Cross multiply
   99,315.53x = 137,056.59 × 53,992.52
4. Step 4: Simplify right side
   99,315.53x = 7,400,030,302.91
5. Step 5: Solve for x
   x = 7,400,030,302.91/99,315.53
6. Step 6: Final answer
   x = 74,510.30