Finding the Fourth Proportional to 91,045,978.26, 136,613,808.76 and 42,516,779.05

Step by Step Solution

1. Step 1: Write the proportion equation
   91,045,978.26 : 136,613,808.76 = 42,516,779.05 : x
2. Step 2: Convert to fraction form
   91,045,978.26/136,613,808.76 = 42,516,779.05/x
3. Step 3: Cross multiply
   91,045,978.26x = 136,613,808.76 × 42,516,779.05
4. Step 4: Simplify right side
   91,045,978.26x = 5,808,379,121,332,222
5. Step 5: Solve for x
   x = 5,808,379,121,332,222/91,045,978.26
6. Step 6: Final answer
   x = 63,796,108.65