Finding the Fourth Proportional to 99,100.72, 136,763.13 and 56,659.22

Step by Step Solution

1. Step 1: Write the proportion equation
   99,100.72 : 136,763.13 = 56,659.22 : x
2. Step 2: Convert to fraction form
   99,100.72/136,763.13 = 56,659.22/x
3. Step 3: Cross multiply
   99,100.72x = 136,763.13 × 56,659.22
4. Step 4: Simplify right side
   99,100.72x = 7,748,892,270.56
5. Step 5: Solve for x
   x = 7,748,892,270.56/99,100.72
6. Step 6: Final answer
   x = 78,192.09