Finding the Fourth Proportional to 99,097.34, 136,754.42 and 56,656.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,097.34 : 136,754.42 = 56,656.76 : x
2. Step 2: Convert to fraction form
   99,097.34/136,754.42 = 56,656.76/x
3. Step 3: Cross multiply
   99,097.34x = 136,754.42 × 56,656.76
4. Step 4: Simplify right side
   99,097.34x = 7,748,061,385.82
5. Step 5: Solve for x
   x = 7,748,061,385.82/99,097.34
6. Step 6: Final answer
   x = 78,186.37