Finding the Fourth Proportional to 99,100.53, 136,725.60 and 56,074.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,100.53 : 136,725.60 = 56,074.02 : x
2. Step 2: Convert to fraction form
   99,100.53/136,725.60 = 56,074.02/x
3. Step 3: Cross multiply
   99,100.53x = 136,725.60 × 56,074.02
4. Step 4: Simplify right side
   99,100.53x = 7,666,754,028.91
5. Step 5: Solve for x
   x = 7,666,754,028.91/99,100.53
6. Step 6: Final answer
   x = 77,363.40