Finding the Fourth Proportional to 61,789.02, 91,888.59 and 59,820.72

Step by Step Solution

1. Step 1: Write the proportion equation
   61,789.02 : 91,888.59 = 59,820.72 : x
2. Step 2: Convert to fraction form
   61,789.02/91,888.59 = 59,820.72/x
3. Step 3: Cross multiply
   61,789.02x = 91,888.59 × 59,820.72
4. Step 4: Simplify right side
   61,789.02x = 5,496,841,613.58
5. Step 5: Solve for x
   x = 5,496,841,613.58/61,789.02
6. Step 6: Final answer
   x = 88,961.46