Finding the Fourth Proportional to 91,458,019.38, 137,007,659.43 and 53,038,818.66

Step by Step Solution

1. Step 1: Write the proportion equation
   91,458,019.38 : 137,007,659.43 = 53,038,818.66 : x
2. Step 2: Convert to fraction form
   91,458,019.38/137,007,659.43 = 53,038,818.66/x
3. Step 3: Cross multiply
   91,458,019.38x = 137,007,659.43 × 53,038,818.66
4. Step 4: Simplify right side
   91,458,019.38x = 7,266,724,403,538,809
5. Step 5: Solve for x
   x = 7,266,724,403,538,809/91,458,019.38
6. Step 6: Final answer
   x = 79,454,207.00