Finding the Fourth Proportional to 137,172,491.37, 189,455,144.27 and 90,338,921.01

Step by Step Solution

1. Step 1: Write the proportion equation
   137,172,491.37 : 189,455,144.27 = 90,338,921.01 : x
2. Step 2: Convert to fraction form
   137,172,491.37/189,455,144.27 = 90,338,921.01/x
3. Step 3: Cross multiply
   137,172,491.37x = 189,455,144.27 × 90,338,921.01
4. Step 4: Simplify right side
   137,172,491.37x = 17,115,173,312,693,990
5. Step 5: Solve for x
   x = 17,115,173,312,693,990/137,172,491.37
6. Step 6: Final answer
   x = 124,771,177.82