Finding the Fourth Proportional to 91,045,978.76, 136,613,809.50 and 42,516,779.55

Step by Step Solution

1. Step 1: Write the proportion equation
   91,045,978.76 : 136,613,809.50 = 42,516,779.55 : x
2. Step 2: Convert to fraction form
   91,045,978.76/136,613,809.50 = 42,516,779.55/x
3. Step 3: Cross multiply
   91,045,978.76x = 136,613,809.50 × 42,516,779.55
4. Step 4: Simplify right side
   91,045,978.76x = 5,808,379,221,997,195
5. Step 5: Solve for x
   x = 5,808,379,221,997,195/91,045,978.76
6. Step 6: Final answer
   x = 63,796,109.41