Finding the Fourth Proportional to 102,789,768, 141,881,638.56 and 66,120,342.24

Step by Step Solution

1. Step 1: Write the proportion equation
   102,789,768 : 141,881,638.56 = 66,120,342.24 : x
2. Step 2: Convert to fraction form
   102,789,768/141,881,638.56 = 66,120,342.24/x
3. Step 3: Cross multiply
   102,789,768x = 141,881,638.56 × 66,120,342.24
4. Step 4: Simplify right side
   102,789,768x = 9,381,262,499,159,182
5. Step 5: Solve for x
   x = 9,381,262,499,159,182/102,789,768
6. Step 6: Final answer
   x = 91,266,501.34