Finding the Fourth Proportional to 91,172,764.80, 136,643,025.60 and 37,259,164.80

Step by Step Solution

1. Step 1: Write the proportion equation
   91,172,764.80 : 136,643,025.60 = 37,259,164.80 : x
2. Step 2: Convert to fraction form
   91,172,764.80/136,643,025.60 = 37,259,164.80/x
3. Step 3: Cross multiply
   91,172,764.80x = 136,643,025.60 × 37,259,164.80
4. Step 4: Simplify right side
   91,172,764.80x = 5,091,205,009,601,018
5. Step 5: Solve for x
   x = 5,091,205,009,601,018/91,172,764.80
6. Step 6: Final answer
   x = 55,841,292.31