Finding the Fourth Proportional to 72,307.35, 99,789.84 and 53,274.15

Step by Step Solution

1. Step 1: Write the proportion equation
   72,307.35 : 99,789.84 = 53,274.15 : x
2. Step 2: Convert to fraction form
   72,307.35/99,789.84 = 53,274.15/x
3. Step 3: Cross multiply
   72,307.35x = 99,789.84 × 53,274.15
4. Step 4: Simplify right side
   72,307.35x = 5,316,218,904.64
5. Step 5: Solve for x
   x = 5,316,218,904.64/72,307.35
6. Step 6: Final answer
   x = 73,522.52