Finding the Fourth Proportional to 98,598.75, 136,066.28 and 56,181.89

Step by Step Solution

1. Step 1: Write the proportion equation
   98,598.75 : 136,066.28 = 56,181.89 : x
2. Step 2: Convert to fraction form
   98,598.75/136,066.28 = 56,181.89/x
3. Step 3: Cross multiply
   98,598.75x = 136,066.28 × 56,181.89
4. Step 4: Simplify right side
   98,598.75x = 7,644,459,814.43
5. Step 5: Solve for x
   x = 7,644,459,814.43/98,598.75
6. Step 6: Final answer
   x = 77,531.00